|
|
| Surname | Emigrated from in Ireland | Settled in Iowa | Researcher |
| Ivory | Mullinavat, Killkenny | Webster Co | Susan Fletcher |
| Ivory | Co. Kilkenny | Clayton Co. | Michael F. O'Brien |
| Jackman | Co. Kilkenny | Palo Alto & Webster Cos | Kathleen Puls |
| Jackson | Co. Kildare | Hardin Co | George Jackson Krause |
| Jackson | Unknown | Scott Co. | Robert Keough |
| Jamason | Co. Kilkenny | Tama & Buchanan Cos. | Roy Jamason |
| James | Ballylongane near Ballyheige, County Kerry | Lucas Co | Valerie C James |
| Jennings | Co. Mayo | Adams Co | jimpmiller@msn.com |
| Jennings | Unknown | Montgomery Co. | Julie Hoffman |
| Jess | Ballyduff, Co. Kerry | Jackson & Dubuque Cos. | Karen D Alvarez |
| Johnston | Co. Fermanagh | Delaware Co | Beverly Hahesy Hannon |
| Johnston | Co. Fermanagh | Delaware Co | Becky Teubner |
| Johnston | Co. Dublin | Fayette Co. | Michael O'Neill Johnston |
| Jordan | Co. Clare | Winneshiek Co | Barbara Bader |
| Jones | Unknown | Woodbury Co | Kathy McGinty Stoneberg |
| Joyce | Co. Mayo | Clinton Co | Phyllis Miller |
| Joyce | Co Mayo | Allamakee Co | Gerry Joyce |
|
Joynt |
Beagh, Galway |
Palo Alto Co |
|
| Judge | unknown | Scott & Clinton Cos. | Mikki Judge |
| Judge | Ballina, Kilmoremoy, Mayo | Clinton Co | Jack Kiesner |
| Kain | poss Co Mayo | Kossuth Co | S. Mooney |
| Kain | Co. Armagh | Clinton & Plymouth Cos. | Kevin Huigens |
| Kane | Co. Antrim | Dubuque Co. | Kathy Burford Lewis |
| Kane | Unknown | Howard Co | Theresa Cooper |
| Kane | Co. Galway | Dubuque Co. | cw4teach@aol.com |
| Kane | Balley Ragid, Burns Grove, Kilkenny | Palo Alto Co. | Mary Kane-Alger |
| Kane | Co. Roscommon | Palo Alto Co. | S.J. Seymour |
| Kealy | Co. Kilkenny | Clayton Co. | Michael F. O'Brien |
| Kearney | Co. Louth | Dubuque Co | Patrick Carney |
| Kearney | Co. Cork | Scott & Clinton Cos. | Michael J Kearney |
| Kearney | Co. Limerick | Monroe Co | Janice Egan |
| Kearon | Co. Dublin | Fayette Co. | Michael O'Neill Johnston |
| Keas | Co. Limerick | Dubuque Co | Cindy Wood |
| Keena | Co. Kerry | Wright Co. | Dave Reynolds |
| Keenan | Co. Down | Delaware & Buchanan Cos | Becky Teubner |
| Keenan | Co. Down | Buchanan Co. | Randy McGraw |
| Keleher / Kelleher | Cos. Cork & Tipperary | Clayton Co. | Myron L Kelleher |
| Kelley | Co. Roscommon | Delaware Co. | Debra Anderson |
| Kelley | poss. Co. Donegal | Allamakee Co. | Kate Belgard |
| Kelley | Unknown | Union Co. | Barbara Kelley Trammell |
| Kelley | Unknown | Dubuque Co | Patrick Sullivan |
| Kelley / Kelly | Bellsgrove, Tisrara, Roscommon | Taylor & Cerro Gordo Cos. | Judy Kelly Fausch |
| Kelly | Co. Roscommon | Jones Co. | Mary Kay Kuhfittig |
| Kelly | Unknown | Clinton Co. | Jean Kremer |
| Kelly | Galway | Allamakee Co | Gary Nicholson Key |
| Kelly | Unknown | Keokuk Co | Priscilla A. Schmidt |
| Kelly | Unknown | Monroe Co | Janice Egan |
| Kelsh | Co. Meath | Dubuque & Cerro Gordo Cos. | Denise Plunkett |
| Kenefick | Unknown | Wright Co | hagensicks@trvnet.net |
| Kennedy | Coumdubh, Annascaul, Co Kerry | Terri Heffernan | |
| Kennedy | Co. Fermanagh | Delaware Co | Becky Teubner |
| Kennedy | Co. Tipperary | Dubuque & Jackson Cos. | Jim Sazevich |
| Kennedy | King's Co. | Clinton & Plymouth Cos. | Kevin Huigens |
| Keogh | Co. Limerick | Webster Co | Constance Nash Nelson |
| Keogh | Co. Dublin | Edith Cornett | |
| Kerr | Drumnastrade, Co Tyrone | Leone Kerr | |
|
Kerr / Carr |
Co. Donegal | Scott Co. | Barbara |
| Kieley / Kiley | Co. Tipperary | Franklin & Hardin Cos. | Dan Kiley |
| Kielty | Co. Mayo | Allamakee Co. | AKielty@aol.com |
| Killion | Unknown | Muscatine Co | Chris Hunter |
| Kier | Co. Antrim | Various Cos. | Shirley Bolter-Baker |
| King | Co. Tyrone | Jones Co | |
| King | Unknown | Jones Co. | Randy McGraw |
| Kinnavey | Unknown | Scott Co | Jackie Baumgard |
| Kinsella | Co. Wicklow | Jones & Jackson Cos | Patrick Coleman |
| Kirk | Co. Tyrone | Muscatine Co | Joe Harper |
| Kirkland | poss Co Armagh | Madison Co | Phil Young |
| Kirwan | poss Co. Kerry | Pocahontas & Dubuque Cos. | Veronica Kirwan Christenson |
| Knowles | Queens Co | Wapello Co | Karen Roberts |
| Knowles | Queens Co | Monroe Co | Janice Egan |
| Lacy | Co. Wexford | Sac Co. | Maureen Dahnke |
| Lafferty | Unknown | Clinton Co. | Michael Buttleman |
| Lahiff | Co. Clare | Webster Co. | Mary Ellen Burchfield |
| Lally | Belmullet, Co Mayo | Harrison Co | Charlie Rock |
| Langan | Co. Waterford or Meath | Sally Langan Osborn | |
| Langan | Unknown | Keokuk Co | Priscilla A. Schmidt |
| Langin | Unknown | Benton Co. (& others) | Deveron |
| Lanagan | Co. Clare | Scott Co | Marianne Ruppersberger |
| Lanaghan / Lanigan | Unknown | Dubuque & Clinton Cos. | Kathy McGinty Stoneberg |
| Lanigan | unknown | Jefferson, Wapello, Scott Cos. | Mary Lanigan |
| Lannon | Poss Co. Roscommon | Clayton Co. | Ginger Kruse |
| Larkin | Warrenpoint parish, Co. Down | Dubuque Co. | Michael A Cavanaugh |
| Latta | Airsty, Co. Donegal | Des Moines Co. | Bonnie Richard |
| Lawler | Unknown | Muscatine Co | Elizabeth Harper Casillas |
| Lawler | Wexford Co | Hardin Co. | Glo Lawler Reber |
| Leahy | Dunquin, Co. Kerry | Jackson & Dubuque cos. | Karen D Alvarez |
| Leahy | poss Co. Tipperary | Benton Co | Donna Lundeen |
| Lee | Unknown | Polk Co | Barbara Petree |
| Lee | Co. Cavan | Scott Co | Joan Fisher |
| Leech | Co. Down | Tama Co. | Janet Hofer |
| Lekin | Parish of Killead, Co. Antrim | Iowa Co. | Sherry Petersen |
| Lendrum | Co. Fermanagh | Delaware Co | Becky Teubner |
| Lennon | Unknown | Iowa | firenze6@aol.com |
| Leonard | Lissyegan, Ahascragh, Ballinsloe, Galway | Polk Co | Mary Sheridan Swatta |
| Leonard | Co. Cork | Marshall Co | Nader Ghassemi |
| Leonard | Co. Cork | Wright Co. | Sue |
| Leonard | Co. Roscommon | Jackson & Pottawattamie | Patrick Turner |
| Leonard | Co. Galway | Jones Co | Virginia Haynes |
| Leonard | Bohermeen, Co Meath | Woodbury Co | Jacqui Fay Olson |
| Leonard | Unknown | Dubuque Co | Kathy McGinty Stoneberg |
| Leonard | Co. Fermanagh | Lyon Co | TPMcKenna@aol.com |
| Linehan | prob. Co. Cork | Scott Co | James M Linehan |
| Linehan | Unknown | Dubuque Co | Stephanie |
| Lodge | Unknown | Johnson Co. | Carol Skiles |
| Loftus | Castlebar, Co. Mayo | Madison Co. | Helene Fennessy |
| Loftus | Unknown | Humboldt Co. | AL Agnew |
| Logue | Poss. Co. Donegal | Howard Co. | Lynn Logue |
|
Lonergan |
Co Tipperary | Johnson Co | Joan Rogers |
|
Long |
Co. Cork | Clinton Co. | Michael J Kearney |
|
Loughlin / Laughlin |
Unknown | Dubuque & Jackson Cos. | Ellen Elliott |
|
Loury |
Unknown | Taylor Co | Indianesummer@aol.com |
|
Lovett |
Unknown | Dubuque Co | Pamela Boehr |
| Lowery | Co Westmeath | Palo Alto Co | Kathleen Puls |
| Luney | Belfast, Co Antrim | Crawford Co | Betty Ann Schenk |
| Lynch | Co. Kilkenny | Muscatine Co | Elizabeth Harper Casillas |
| Lynch | Co. Roscommon | Jackson & Dubuque Cos | Patrick Coleman |
| Lyuch | Co. Cork | Cedar Co | Conni Lynch |
| Lynch | Co. Cork | Davis Co | Margaret Sloan |
| Lynch | Unknown | Louisa and Monroe Cos. | Rosemary Tiwari |
| Lynch | Co. Roscommon | Clinton Co. | Michael J Kearney |
| Lynch | Co. Roscommon | Story& Greene Cos | vargasd@zianet.com |
| Lynch | Co. Cork | Bremer Co | Jane McAuliffe |
| Lynch | Co. Clare | Polk Co. | Lynn Griffin Nelson |
| Lyness | Co. Down | Delaware Co | Becky Teubner |
| Lyness | Co. Down | Buchanan Co. | Randy McGraw |
| Lyness / Lynass | Unknown | Delaware Co | Margaret McElliott |
| Lyons | Unknown | Johnson Co | Mary Kalhoff |
| Mackey | Co. Tipperary | Greene Co. | Karen Mackey |
| Mackin | Co. Louth | Clinton Co | Jackie Baumgard |
| Mackin | Unknown | Marion & Palo Alto Cos. | Dorothy |
| Mackin | Unknown | Buchanan Co | MosesGJM@aol.com |
| Mackin / Macken | King's Co | Monroe Co | pwrigh01@aol.com |
| Madden |
Co. Galway |
Jones & Dubuque Cos. |
|
| Madigan | Co. Clare | Dallas & Pocahontas Cos. | Patti Bacon |
| Magarrell | Co. Down | Cass Co. | Don J Boyle |
| Magee | Unknown | Tama Co. | Janet Hofer |
| Maguire |
Unknown |
Allamakee & Palo Alto Cos |
|
| Maguire/ McGuire |
Co. Fermanagh |
Lyon Co |
|
| Maher | Thurles, Tipperary | Dubuque Co | Penny LaDue |
| Maher | Queen's Co | Clinton Co | James M Linehan |
| Maher | Co. Tipperary | Dallas Co | Gerald Maher |
| Maher | Castlewarren, Co. Kilkenny | Fremont Co | Patricia Maher |
| Mahon / McMahon | Co. Longford | Kossuth Co | Gerri Witte |
| Mahoney | Co. Cork | Buchanan Co | LeRoy D Mahoney |
| Mahoney | Co. Cork | Monroe Co. | Marilyn Coleman |
| Mahoney | Unknown | Crawford Co. | Portia Haynes |
| Mahoney | Co. Cork | Delaware & Crawford Cos. | Scott Mahoney |
| Mahoney | Co. Kerry | Howard Co | Gay Murphy |
| Mahoney | Co. Cork | Fremont Co | Maggie Mahoney Samide |
| Mahoney | Co. Cork | Dubuque Co. | Brent Banta |
| Major | Co. Longford | Warren & Cerro Gordo Cos. | Janet Dearth |
| Malanaphy | Unknown | Winneshiek Co | Tim Daly |
| Malaney | Unknown | Iowa & Des Moines Cos | Donna Youde |
| Maloney | Co. Clare | Buchanan Co | Gerald & Sue O'Loughlin |
| Maloy | Co. Kilkenny | Fremont Co | Angie Pieper |
| Manion | Co. Galway | Allamakee Co | Gloria Manion |
| Manion | Co Mayo | Scott Co | Christine Murcia |
| Manogue | Callan, Co Kilkenny | Clay | |
| Maroney | Co. Waterford | Blackhawk Co | Joe Searl |
| Marrin | Co. Monaghan | Allamakee Co | Jody Howard |
| Marron | Co. Armagh | Clinton Co | Nancy Frey |
| Martin | unknown | Tama Co | Carol Meyer |
| Martin | Ballynahinch, Co Down | Dubuque Co | Anne Dowis |
| Martin | Co. Cork | Palo Alto Co | Judy Bridges |
| Martin | poss Co. Cavan or Cork | Chickasaw Co | Jim Hand |
| Martin |
Co. Galway |
Jones & Dubuque Cos. |
|
| Martin |
poss. Co. Antrim |
Jackson & Dubuque Cos. | Carol Veio |
| Masterson | Co. Sligo | Des Moines Co. | Ria Pallaris |
| Mathers | Unknown | Floyd Co. | Sharon Rhodes |
| Mathews | Co. Dublin | Winneshiek Co | Ada Austin |
| Mathews | Unknown | Allamakee Co | Shirley Pizziferri |
| Mawhor | Co. Tyrone | Fremont Co | Rex Manrose |
| Maxwell | Unknown | Des Moines Co. | NRathbun@aol.com |
| McAdams | Antrim, Near Belfast | Wapello Co. | Julie McAdams |
| McBay | Kiltyferrigle, Cloghan, Co. Donegal | Allamakee Co. | John Patton |
| McBride | Belfast | Delaware Co | Margie Vaterlaus |
| McBride | Unknown | Franklin & Floyd Cos. | Lorraine Hand |
| McBride | Co. Donegal | Jones & Linn Cos. | Susan DeLaRosa |
| McCabe | Co. Cavan | Dubuque Co | Firecapwfe@aol.com |
| McCabe | Unknown | Greene Co. | Maureen Day Moore |
| McCabe | Unknown | Dubuque Co | Kathy McGinty Stoneberg |
| McCaffrey | Unknown | Dubuque & Jackson Cos. | Patrick Turner |
| McCaffrey | Ballycroy, Co. Mayo | Allamakee Co. | J. Skog |
| McCaffrey | Co Monaghan | Dubuque Co | Bridget E. Kleusner |
| McCahill | Co. Cavan | Unknown | Virginia McCall Laughlin |
| McCall | Unknown | Story Co | Sharyn Streicher |
| McCann | Co. Clare | Dubuque Co. | Susan Crowe |
| McCartan / McCarten | Co Down | Dubuque Co | Pat Martin |
| McCarthy | unknown | Scott Co | Pam Donoghue |
| McCarthy | Unknown | Jackson Co | Patrick Turner |
| McCarthy / McCarty | Bantry, Cork | Webster Co. | Cookie Welch |
| McCarthy / McCarty | Co. Cork | Webster Co | Puffysmum@aol.com |
| McCarthy | Prob. Navahal Parish, Co. Cork | Trudi Jackson | |
| McCarty | Co. Cork | Monroe Co. | Marilyn Coleman |
| McCauley | Unknown | Dubuque Co | jimflans@hotmail.com |
| McClain | Co. Down | Madison Co. | Jane Kolar |
| McCluskey | Unknown | Howard Co | Michael Bartlett |
| McCollins | Co. Cavan | Edith Cornett | |
| McConnell | Co. Down | Dubuque Co. | Billie Jo Read |
| McCormick | Co. Sligo | Blackhawk & Palo Alto Cos. | Dee McCormick Allen |
| McCoy | Co. Donegal | Clinton & Scott Cos | Robert Douglas |
| McCoy | Unknown | Palo Alto Co | Jamie Coniglio |
| McCoy | Co Antrim | Scott Co | John McCoy |
| McCrickard | Co Down | Pottawattamie Co | jn8219@aol.com |
| McCue | Co. Meath | Clayton Co. | Jean Judge-Dylak |
| McCullough | Monaghan, Co. Monahan | Jasper, Poweshiek, Marshall, Mahaska & Polk Cos | Elaine Mershon |
| McCullum / McCollum | Co. Antrim | Humboldt, Pocahontas, Palo Alto Cos. | Doug & Becky Jo |
| McCune | Poss Co Fermanagh | Johnson Co | William Rader |
| McCune | probably Co. Cavan maybe Co. Monaghan | Wapello Co. | Albert Richardson |
| McDermott | Unknown | Marshall Co | Sharyn Streicher |
| McDermott | Unknown | Iowa Co | Varlyn & Jane Fink |
| McDermott | Unknown | Iowa Co | Cherie Weitkamp |
| McDermott | Unknown | Dubuque Co | Ellen Elliott |
| McDermott | Co. Galway | Dubuque Co | Cathy Joynt Labath |
| McDevitt | Co. Donegal | Clinton Co | Cynthia Cavanaugh Salvador |
| McDonald | Unknown | Carroll Co. | AL Agnew |
| McDonald | Unknown | Dubuque Co. | Dorothy McCoy |
| McDonald | Prob. Navahal Parish, Co. Cork | Trudi Jackson | |
| McDonnell | Grenaugh, Co. Cork | Jackson & Clinton Cos. | Mary McDonnell Petersen |
| McDougal | Unknown | Scott Co | eempem@gate.net |
| McElligott / McElliott | Unknown | Delaware Co | Margaret McElliott |
| McElmeel | Co. Monaghan | Delaware Co | Debra Anderson |
| McEvoy | Co. Down | Dubuque Co | Mary Fell |
| McEvoy / McAvoy | Co. Down | Dubuque Co. | Billie Jo Read |
| McEvoy / McAvoy | Ballymagreehan, Ballymagenaghy, Castlewellan, Co. Down | Stuart, Iowa (Guthrie or Adair Cos.) |
Nan Brennan |
| McElroy | Co. Tipperary | Jackson, Dubuque & Webster Cos. | Teresa Wilson |
| McEnany | Co. Monaghan | Delaware Co | Karen Foley |
| McFadden | Co. Donegal | Edith Cornett | |
| McFadden | Unknown | Clinton Co | Steffen |
| McFarland | Unknown | Scott Co | Joann Sebasta |
| McFarland | Unknown | Muscatine Co | Trudee Svaldi |
| McFerrin | Unknown | Page Co. | Ken McFerrin |
| McGaffin | Co Down | Cass Co. | Ron Vickers |
| McGee / Magee | Unknown (Poss. Dublin Co) | Butler Co | Bob McGee |
| McGee | Co. Cavan | Dubuque Co | Marilyn Sobotka |
| McGee | Poss. Co. Donegal | Howard Co. | Lynn Logue |
| McGarrity | Unknown | Allamakee Co. | Jeannie Hegeman |
| McGarry | Unknown | Cerro Gordo Co. | Linda Pierce |
| McGee | Unknown | Clinton Co | John Hanrahan |
| McGee | Co. Armagh | Dubuque Co | Sandy & Joe Miller |
| McGinn | Co. Monaghan | Monroe Co. | Marilyn Coleman |
| McGinn | Co. Monaghan | Monroe Co. | JMcGinn8@aol.com |
| McGinn | Unknown | Poweshiek Co | Karen Johnson |
| McGinn | Co. Tipperary | Clinton & Crawford Cos. | Joann O'Meara |
| McGinnis | Co. Down | Madison & Adair Co. | Marie O'Brien Schertz |
| McGinty | Unknown | Clinton Co. | Jean Kremer |
| McGinty | Unknown | Dubuque, Clinton, Cherokee, Jones, Jackson Cos | Kathy McGinty Stoneberg |
| McGirr | Co. Tyrone | Benton, Delaware, Warren Cos. | Garth MacGirr |
| McGirr | poss. Co. Tyrone | Des Moines Co. | Debra Fedchin |
| McGivern | Co. Armagh | Iowa Co. | Lfitzy20@aol.com |
| McGlone | Castlebar, Co. Mayo | Madison Co | Helene Fennessy |
| McGoey | Co. Longford | Dallas & Palo Alto Cos. | Thomas P McGoey |
| McGourty | Co. Leitrim | Howard Co. | Margaret Merrill |
| McGovern | poss. Co. Mayo | Clayton, Cerro Gordo, Blackhawk, Dubuque Cos. | Shelly McGovern Schmidt |
| McGovern | Ulster | Clinton Co | M.M. Morrow |
| McGovern | Co. Fermanagh | Scott & Clinton Cos. | Michael J Kearney |
| McGovern | Unknown | Sioux Co. | Diane Sullivan |
| McGowan | Ballina, Co. Mayo | Polk Co. | Shirley McGowan |
| McGowan | Co. Fermanagh | Greene Co. | Dennis B. McGowan |
| McGowan / McGowen | Co Down | Cerro Gordo Co. | Liz (McGowan) Wilson |
| McGrail | Unknown | Marion Co | Ronald McGrail |
| McGranna / McGrane | Co. Cork | Dubuque Co | Firecapwfe@aol.com |
| McGrane | Co. Meath | Howard Co. | Connie Rice |
| McGrath | Co. Roscommon | Clinton Co. | Michael J Kearney |
| McGrath | Unknown | Lee Co | Patricia Phelan Dailey |
| McGrath / McGraw | Co. Down | Lyon Co | TPMcKenna@aol.com |
| McGraw | Ulster | Buchanan Co. | Randy McGraw |
| McGreer | Co. Down | Lee Co. | Carolyn McGreer Wheeler |
| McGrinn | Co. Clare | Crawford Co | Joe Scholz |
| McGruder | Unknown | Fayette & Chickasaw Cos. | TexasNormLeona@aol.com |
| McGuigan | Unknown | Dubuque Co | Jim Sazevich |
| McGuire | Unknown | Scott Co | James M Linehan |
| McGuire | Unknown | Webster Co. | Cheryl M. Hartmann |
| McGuire | Aghalurcher, Co. Fermanagh | Blackhawk Co. | David B. McGuire |
| Mehaffy | Co. Monaghan | Des Moines Co | Debbie Koch |
| McHale | Co. Mayo | Poweshiek Co | Pat Clarke Fogel |
| McHugh | Co. Fermanagh | Greene Co. | Dennis B. McGowan |
| McHugh | Co. Cork | Warren Co. | Frank Moden |
| McHugo | Co. Galway | Henry Co. | Kathi Hoon |
| McIntire | Unknown | Linn Co. | Susan Sperry |
| McKay, McCay | Co. Antrim | Delaware & Buchanan Cos | Becky Teubner |
| McKean | Co. Sligo | Jackson & Dubuque & Blackhawk Cos | Patrick Coleman |
| McKee | Unknown | Polk Co | Sharyn Streicher |
| McKenna | Co. Meath | Jones & Dubuque Cos. | Constance Nash Nelson |
| McKenna | Unknown | Allamakee Co. | Jeannie Hegeman |
| McKenna / McCanna | Co. Meath | Dubuque Co | Pat Martin |
| McKenna | Co. Fermanagh | Woodbury Co. | Harriet Ray |
| McKenna | Co. Meath | Webster Co. | Madlyn Halligan Waffal |
| McKenna | Co. Derry | Adair Co | TPMcKenna@aol.com |
| McKinley | Rathlin Island, Co Antrim | Clayton, Fayette, Allamakee, Chickasaw Cos | Maryl |
| McKinney | Unknown | Scott Co | Mary Tucker |
| McKinney | Co. Donegal | Scott Co. | Gina1330fl@aol.com |
| McLarty | Cushendall County Antrim Ireland. | Woodbury Co | Rosemary McLarty |
| McLaughlin | Unknown | Dubuque Co | Jane Groebner |
| McLaughlin | Co. Mayo | Allamakee Co | Kathy Maurer |
| McLaughlin | West Ireland | Polk Co | Jeanette O'Boyle |
| McLaughlin | Rathdonnell, Kilmacrenan Parish, Co. Donegal | Cerro Gordo Co | John D McLaughlin |
| McLaughlin | Co Donegal | Des Moines Co | Linda Clayton |
| McLaughlin | Guldaf, Co. Donegal | Winnishiek Co. | Mary Barbara Nolan Franklin |
| McLaughlin | Unknown | Linn Co. | Susan Sperry |
| McLaughlin | Co. Tipperary | Greene Co. | Karen Mackey |
| McLaughlin | Unknown | Clinton Co. | |
| McLenighan | Ballymena, Co. Antrim | Webster Co | Patricia McCarthy |
| McLenighan | Ballymena, Co. Antrim | Webster Co. | Kathleen A. (McLenighan) Dixon |
| McMahon | Unknown | Butler Co | Joe Kenney |
| McMahon | Co. Cavan | Jones & Dubuque Cos. | Patrick Coleman |
| McMahon | Unknown | Dubuque Co. | Teresa Wilson |
| McMahon | Co. Clare | Dubuque Co. | Susan Crowe |
| McMahon | Co. Clare | Crawford Co | Ron Collins |
| McMahon | Co. Clare | Crawford Co | Scott Mahoney |
| McMahon | Co. Clare | Unknown | Beth McMahon |
| McMahon | Co. Clare | Madison Co | Janice R. Hanrahan |
| McMahon | Co. Monaghan | Cerro Gordo Co | Judy Kelly Fausch |
| McMahon | Co. Monaghan | Chickasaw Co | Mary McMahon |
| McManus | Unknown | Clinton Co | Jackie Baumgard |
| McManus | Co. Roscommon | Clinton Co. | Michael J Kearney |
| McMeekin | Co. Down | Poweshiek Co | Dixie McNatt |
| McMechan | Castlewellan, Co Down | Boone Co | Jobeth Fjell |
| McMenimen | Meenadoan, Inishkeel parish, Co. Donegal | Franklin Co | John D McLaughlin |
| McMullen | Co. Fermanagh | Delaware Co | Becky Teubner |
| McMullen | Co. Fermanagh | Delaware Co. | Brian E. Fay |
| McMullen | Unknown | Jones, Jackson, Dubuque Cos. | Kathy McGinty Stoneberg |
| McMullin | Co. Monoghan | Cerro Gordo Co | Ruth Rogers |
| McMullin | Co. Armagh | Winnishiek Co. | Ginger Metcalf |
|
Newport, Mayo |
Palo Alto Co |
||
|
McNally |
Monaghan, Co Monahan |
Jasper & Poweshiek Cos |
|
|
McNally |
Co. Tyrone |
Audubon Co |
|
|
McNally |
Newport, Mayo |
Palo Alto Co |
|
|
McNamara |
Unknown | Fayette Co | Barbara Bader |
|
McNamara |
Co. Roscommon | Jones Co. | Mary Kay Kuhfittig |
|
McNamara |
Unknown | Cerro Gordo & Worth Cos. | Ralph Mower |
|
McNaney |
Co. Monaghan | Allamakee Co | Patrick McNaney |
|
McNulty |
Unknown | Palo Alto Co. | Dee McCormick Allen |
| McPherren | Loughbrickland, Down | Adams Co | Roger Cox |
| McPoland | Co. Down | Dubuque Co | Dennis McPoland |
| McRoberts | Co Antrim | Delaware Co | Becky Teubner |
| McStravick | Co. Tyrone | Pottawattamie Co. | Barbara Hickey |
| McSweeney | Unknown | Fayette & Buchanan Cos. | Jim Cooney |
| McSwiggin | Unknown | Iowa Co | Patrick Grams |
| McVoy | poss Co. Tyrone | Mitchell Co. | Kathleen Ryan |
| McWatters / McQuatters | Co. Down | Worth Co. | Terri Atkinson |
| Meade | Co. Clare | Crawford Co | Pam Schweikert |
| Meagher | Youglhara, Tipperary | Clarke Co | MAOHogan |
| Meighan / Meehan | Co. Monaghan | Clinton Co. | Jean Kremer |
| Meehan | Unknown | Dubuque Co | Mary Huss |
| Mehan | Co. Sligo | Adams Co | jimpmiller@msn.com |
| Melloy / Meloy | Co. Donegal | Jackson & Dubuque Cos. | Patrick Coleman |
| Melody | Scariff, Co. Clare | Calhoun Co | Gary D. Melody |
| Melvin | Bunree, Sligo | Clinton Co | M.M. Morrow |
| Meylor / Meyler | Co. Wexford | Cherokee Co | Nancy Sinnwell |
| Milligan | Unknown | Dubuque Co | Kathy McGinty Stoneberg |
| Miniter | Co. Clare | Scott & Marshall Cos. | Susan Larkin |
| Mohan | Unknown | Plymouth & Woodbury Cos. | Kathy McGinty Stoneberg |
| Molloy | Co. Tipperary | Monroe Co. | JMcGinn8@aol.com |
| Molumby, Molumpy, Molumphy | Ballinvoher, Kilworth Parish, Co Cork |
Clayton Co | Gerry & Dodie Molumby |
| Molumby | Co. Tipperary | Wapello Co | Dennis & Colette Molumby |
| Monaghan | Carrickmacross, Co Monaghan | Fremont Co | Patricia Maher |
| Mone | Mullyard, Derrynoose, Armagh | Polk Co | Mary Agnes Mone Alpin |
| Monogue / Minogue | Unknown | Lee Co. | Tom Walsh |
| Montgomery | Co. Fermanagh | Delaware Co | Beverly Hahesy Hannon |
| Mooney | Co. Tipperary | Marshall Co | Mooney |
| Mooney | Unknown | Marshall Co. | MOON909@comcast.net |
| Moore | Co. Limerick | Scott Co. | Michael Moore |
| Moore | Ballymeno, Co Antrim | Mary Ellen | |
| Moore | Co. Kerry | Clinton Co | Jack Golden |
| Moore | Unknown | Dubuque Co. | Dwight Moore |
| Moran | Unknown | Winneshiek & Cerro Gordo Cos | Barbara Bader |
| Moren | Unknown | Appanoose Co | Sheryl Sloan |
| Morgan | Co. Down | Dubuque Co. | Billie Jo Read |
| Moriarty | Unknown | Joan Freitas-Ertrachter | |
| Moriarty | Dunquin, Co. Kerry | Jackson & Dubuque Cos. | Karen D Alvarez |
| Moriarty | Unknown | Calhoun Co | Carol Moriarty Parman |
| Morkin | Unknown | Polk Co. | E. Cox |
| Moroney | Co. Clare | Butler Co. | Linda Pierce |
| Morrisey / Morrissey | Unknown | Buena Vista Co | William Rader |
| Morrissy | poss. Co. Limerick | Clinton Co. | kmpbrennan@aol.com |
| Morrison | Co. Sligo | Allamakee Co | James Morrison |
| Morrison | Co. Down | Poweshiek Co | Marty Bryer |
| Morrison | Co. Mayo | Monroe Co. | Njlenig@aol.com |
| Morrison | Co. Mayo | Monroe Co. | Janice Egan |
| Moylan | Unknown | Johnson & Cedar Cos. | Patricia Morris |
| Mugan | Co. Mayo | Boone & Palo Alto Cos. | Marilyn Mugan Holmes |
| Mulcahy | Co. Limerick | Benton Co | Shawn Harkin |
| Muldoon | Unknown | Clinton Co. | Michael J Kearney |
| Mulholland | unknown | Scott & Clinton Cos. | Mikki Judge |
| Mullarkey | Co. Galway | Allamakee Co. | Tina Delaney Hogan |
| Mullen | Co. Galway | Helen Mullen | |
| Mullen | Unknown | Dubuque, Jackson & Harrison Cos. | Patrick Coleman |
| Mullin / Mullen | Co. Cork | Louisa and Monroe Cos. | Rosemary Tiwari |
| Mullera / Malary | Ballykilcline,Co.Roscommon | Clayton Co. | Ginger Kruse |
| Mulligan | Co. Cavan | Dubuque Co | John Kevin Milks |
| Mulligan | Unknown | Dubuque & Webster Cos. | Mary Coen |
| Mullin | Co. Kerry | Decatur Co | Wanda Myers |
| Mulroy / Melroy | Co. Mayo | Madison Co | Jane McAuliffe |
| Mulvaney | Unknown | Linn Co | Joanne |
| Mulvaney / Mulvany | Co. Meath | Wapello Co. | Teresa Shirley |
| Murphy | Co. Meath | Palo Alto Co | Kathleen Puls |
| Murphy | Co. Wexford | Muscatine Co | Joe Harper |
| Murphy | Co. Antrim | Linn Co | Cynthia Cavanaugh Salvador |
| Murphy | Co. Antrim | Dubuque Co | Bonnie Kaplan |
| Murphy | Co. Mayo | Clinton Co. | Jean Kremer |
| Murphy | Co. Wexford | Dubuque Co | Mary Kay Kuhfittig |
| Murphy | Co Wexford | Iowa | Vern Ralph |
| Murphy | Dunquin, Co. Kerry | Fayette & Dubuque Cos. | Margie Murphy Monihan |
| Murphy | Unknown | Johnson Co | R. Jeff Gurvine |
| Murphy | Co. Tipperary | Polk Co. | Lloyd & Betty Rausch |
| Murphy | Co. Cork | Fayette Co. | Rae Freet |
| Murray | Co. Cork | Louisa Co | Helen Hitchcock |
| Murray | Co. Louth | Clinton Co | Eileen Bosshart |
| Murray | Co. Louth | Johnson Co.? | PetieL8613@aol.com |
| Murray | Co Mayo | Chickasaw Co | Vern Ralph |
| Murrin | Killarney, Co. Cork | Iowa Co. | Audrey Kalen Hartman |
| Murtha | Co. Longford | Clinton Co. | Chris Hays |
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