Surname Registry
last updated 06/14/2008
Surname Registry
last updated
06/14/2008
E to L
see below to get your surname included
 Clans and Families of Ireland by John Grenham |
 Irish Book of Arms, Genealogy & Heraldry by Michael C. O'Laughlin |
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| Surname | Ireland County | Where Emigrated | Time line | Contact |
| Earles | Galway | Newfoundland | 1800s | Joe Earles |
| Earls | ?? | West Troy NY | 1846-1880s | Pat Wood |
| Egan | unknown | Prairie Du Chien, WI | 1845-50 | Gloria Lund |
| Eighan, Egan | Co Westmeath | Australia | 1840-64 | Pat Liebich |
| English | Clare? | Wales, USA | 1860-1940 | Julie |
| English | Tipperary | NY >> WI | 1848-1851 | SJ Hawley |
| English | Antrim | PA | ca 1774 | Julia English-Spicer |
| Erwin, Irwin | not given | Pennsylvania | 1700's | Shari Cygan |
| Evans | Co Kerry | So Australia | 1800-1840 | Leanne Parker |
| Evoy | Co Wexford | OH, IL | 1850 on | Pat |
| Fagan | unknown | Kansas | ca 1870 | Rick F Kasparek |
| Fahy | Claremorris, Co Mayo | Sydney AU | 1826-7 | Erla |
| Fallon | Co Galway | NY, PA | not given | Patricia C Coogan |
| Fanning | Tipperary | CT | 1652 | Robert Fanning |
| Farley | Co Meath | USA, WI | 1839-1913 | Bruce R Bucholtz |
| Farley | Drogheda/Dublin | did not emigrate | 1800-1910 | Michelle Wilson |
| Farman | not given | Gaspe coast, Quebec | 1810-50 | Lani Mitchell |
| Farrell | Co Westmeath | not given | 1907 | Margaret Jones |
| Farrell | Co Wexford | Davies Co IN | 1851 | Linda Rodgers |
| Farrelly | Kingscourt, Co Cavan | Illinois | 1890s | Diane |
| Farrelly | County Cavan | NYC | 1891-1950s | John J Bohnert |
| Farren, Farron, Farrin | Lower Moville, Donegal | Cambria PA | 1700-1900 | Colleen |
| Fean | Limerick | NY | 1866-7 | Trudy F Smith |
| Fee | Leitrim | PA | 1800-1900 | Eileen Kightlinger |
| Fee | Clones, Co Monaghan | New York | late 1880s | Brian G O'Donnell |
| Fee | Co Mayo | Canada, PA | 1800s | Walton J Sullivan |
| Fee | Mayo | Leeds ENG, Pittston PA | 1847-1885 | Francis Redding |
| Feeney | Ballybricken, Waterford | New York City | 1925 | John Moran |
| Feeney | Derk, Sligo | New York City | 1925 | John Moran |
| Fell | Lisloran, Knockavilla, Tipperary | Jersey City NJ | 1906 | Patricia Cooper |
| Fennell | Clonmel, Co Tipperary | New Zealand | 1870-80 | Connie Newton |
| Fenton | Dunquin | Springfield MA | 1917 | Joe Fenton |
| Fergus, Ferguson | Louisburgh, Westport, Co Mayo | MA >> Chicago IL | 1910, 1913 | Sally A Ferguson |
| Ferguson | Limerick (Rathkeale) & Tipperary | NYC, NJ | 1851± | Linda Ferguson |
| Ferguson | not given | Canada ca 1810 | 1784 forward | Carol Haycock |
| Ferguson | Monaghan, Fermanagh | CAN, PA, IL, MS | 1847 | Jerrian Barsness |
| Fielding | unknown | Ontario CAN | 1819 | Trudy Fielding |
| Finlay | Carnmoney, Antrim | not given | not given | Nancy Jewel |
| Finn | Co Cork | Simpson Co., Kentucky | 1700s | Stacey Disman |
| Finn | Co. Cork | Brooklyn NY | 1850 | Pat Wood |
| Fitzgerald | Ballingarry, Co Limerick | N.S.W., Australia | 1850 | Marie Payne |
| Fitzgerald | Murroe, Co Limerick | not given | 1810-1870 | No Name Given |
| Fitzgerald | Limerick (Rathkeale) | NYC | ca 1851 | Linda Ferguson |
| Fitzgerald | Kilfearagh, Kilrush Co Clare | Elmira Chemung Co NY | 1870-86 | Anne Green |
| Fitzgibbon | Ballyhaught, Co. Limerick | not given | not given | Jim Regan |
| Fitzmaurice | not given | NJ, NY area | 1840-1906 | Karen F Camp |
| Fitzmaurice | North Mayo, Koltmagh etc | NJ, NY, UK | 1850s onward | Ciaran Colgan |
| Fitzpatrick | Waterford Co | Watervliet NY | 1850 | Michael Sheeran |
| Fitzpatrick | West Hill, Ballycahill, Tipperary | Jersey City NJ | 1900 | Patricia Cooper |
| Fitzpatrick | Buttevant, Cork | MA, NJ | 1871 | Susan Hollenbeck |
| Fitzpatrick | Freshford, Kilkenny | did not emig | 1780-1820 | Sally Mason |
| Fitzpatrick | Co Mayo | not given | 1850-1900 | Lorraine Palmer |
| Fitzwilliam | Wicklow, Wexford | Brooklyn NY | 1851-53 | John Fitzwilliam |
| Flaherty, O'Flaherty | Co Kerry | IL > IA | 1850-55 | Jeff Kramer |
| Flanagan | Co Roscommon | Troy NY > Fair Haven VT | 1861-1870 | Mike Minogue |
| Flanagan | Killeagh, Cork | UK | 1850s | Handaros |
| Flanagan | Co Tipperary | MA > NYC > Cleveland OH | ca 1885-90 | Tim Drake |
| Flanagan | Tipperary Par, Co Tipperary | Troy NY | emig 1864 | Pat Connors |
| Flanagan | Tipperary Par, Co Tipperary | did not emig | ca 1816 | Pat Connors |
| Flanagan, Flanigan | unknown | Indiana USA | 1846-50 | Melody Marshall |
| Flan(n)agan | Castle Dunagh, Co Kilkenny | Gundaroo, NSW, AUS | 1813-1894 | Robyn Montgomery |
| Flannelly | County Mayo | Canada | 1843-45 | Jerome J McDermott |
| Flaherty | Lettermore, Lettermullen | St Paul MN | 1880 | Ray Flaherty |
| Fleming | Kilkelly, Louisburgh, Co Mayo | Thompsonville, New Haven CT | 1865-1870 | John Malley |
| Fleming | Wexford or Cork | PE Canada | 1816 | Megan Skinner |
| Fleming | unknown | Chicago IL | 1855 | Sarah Toblesky |
| Flewellen | not given | New Zealand | not given | Maria |
| Flewellen | Waterford, Kilkenny | New Zealand | 1880-81 | Pam Young |
| Flinn | Ireland | Australia | 1815-1840 | Bronwyn Flinn |
| Flood | Rath, Fogeny Co Longford (maybe) | Brooklyn NY 1866 | 1800 on | Kevin P Flood |
| Flynn, Flinn | unknown | Newfoundland | 1849-51 | Eileen Palmer |
| Flynn | unknown | Australia | 1850-60 | Lesley O'Neill |
| Flynn | Duagh, Co Kerry | Negaunee MI | 1850s | Ray Marshall |
| Flynn | Co Cavan | Schenectady NY>Merriton ONT, CAN | 1807-1861 | Kate Parle |
| Flynn | Ballinlough, Clydagh, Roscommon | Manchester, ENG | late 1800s | George Carter |
| Flynn | Roscommon | Plainfield NJ | 1850s-59 | John J Flynn |
| Flynn | Mayo, Galway | Manchester UK | 1830s, 40s | Gill Rice |
| Flynn | unknown | Hudson, Columbia Co, NY | 1840/1850 | Mary L Casey |
| Flynn | Cloone, Co. Leitrim | Troy NY | 1800s to present | Pat Connors |
| Fogarty | Tipperary | NSW, Australia | 1800-50s | Carol Dale |
| Foley | unknown | US | 1861 | Donna Marstrander |
| Foley | Roscommon?? | New Hampshire | 1849 | Judy Dollard |
| Foley | unknown | Australia | 1850-60 | Lesley O'Neill |
| Foley | Co Kerry | Boston MA | 1870-1930 | Michelle Foley |
| Foley | Sligo | Newmarket, York, NB, CAN | 1829-1844 | Linda Morris |
| Foley | Kanturk, Co Cork | England | not given | O Nourse |
| Foley | Dublin, presume | unknown | pre 1900 | Michael McAllister |
| Foley | County Kerry | Harmony, Minn. | 1855-56 | Matt Foley |
| Foley | unknown | Schuylkill Co, PA | unknown | Lorraine Hanley |
| Foran | unknown | Prairie Du Chien, WI | 1845-50 | Gloria Lund |
| Ford | Co Monaghan | Neustadt, Ontario CAN | 1840s, 1850 CAN | Rachel Boyle |
| Fordham | all | Asia | 1870, 1920 | Don Dalmeny |
| Forde | mostly Galway | Boston MA | 1840-1914 | Sandy Mullen |
| Forde, Ford | Co Leitrim | Liverpool>Kent>USA-OR | 1800s-1900s | Jean Rice |
| Forrest, Forest | Portlaw, Co Waterford | Cheshire ENG, USA | 1833-65 | Thomas F Travis |
| Forrester | Co Mayo, perhaps Friarstown | Seeley's Bay, ONT, CAN | 1839-40? | Jack Forrester |
| Fottrell | Dublin | NY, CA, KY | 1850-1920 | Gene Fottrell |
| Fox | Co Armagh | did not emig | pre 1870 | Pat Connors |
| Fox | unknown | not given | 1900 on | Heather Fox |
| Fox | Co Wicklow, Ashford, Rathnew, etc | Philadelphia PA | 1800-1900 | William Fox |
| Foy | Donegal | Philadelphia PA | 1850 to present | Anne |
| Foy | unknown | England > America | 1835-1870 | Diane Crabtree |
| Foy | unknown | England | early 1830s | Margaret Ward |
| Francis | Co Galway | NYC > PA > Clark Co IN | 1800-47 | Margaret Anderson |
| Freeman | pos Kilmaley Par, Co Clare | New South Wales AU | 1800s on | Julia |
| Frewen | Lyre, Glen of Aherlow, Co Tipperary | not given | 1848-74 | Phyllis Robinson |
| Friel | Co Donegal | not given | from 1860 | Marianne Bonner |
| Fullam | poss Co Longford | New York | 1846 | Thomas Fullam |
| Fulton | Carnmoney, Antrim | not given | not given | Nancy Jewel |
| Furey | not given | PA > MN | 1850s | Jan Egan |
| Fury | Galway | Louisville KY | 1880s | Shirley Brinly |
| Gag(h)an | Dublin | Foleshill, Warwickshire, UK | 1812-1866 | Kaye Taylor |
| Gahan | North Dublin | Liverpool | 1860-90 | Stuart M Gagan |
| Gahan | Aghowle, Clonmore Par., Co Wicklow | not given | 1800 on | Stuart M Gahan |
| Gallagher | Donegal | Philadelphia PA | 1850 to present | Anne |
| Gallagher | Dunmurry, Co Kildare | NY, NY | 1906 | Mary LaRocca |
| Gallagher | unknown | PA | bef 1860 | Mary P |
| Gallagher | Co. Cork | Brooklyn NY | 1860s | Pat Wood |
| Gallagher | possibly Tipperary | did not emig | 1700s-1800s | Pat Connors |
| Galvin | unknown | Troy NY | 1880-1910 | Jeanne Keefe |
| Gannon | Dunmore, Cortoon, Tuam, Co Galway | Baltimore MD | ca 1880-1883 | Mary Timmins |
| Gannon | Dublin | NY; St Catherine ONT, CAN; Detroit MI | 1855 | Mary |
| Gannon | Co Mayo | New Zealand | 1850-1900 | Lorraine Palmer |
| Gardner | Tipperary | Chicago IL | long time ago | Pat |
| Garvin | Co Derry | New Zealand | 1880-1950 | Eric Shackleton |
| Gaul(e) | So. Co Kilkenny | Chicago IL | 1860s | Maureen Neidle |
| Gearin, Gerran, Geron | not given | Phila PA | 1845-60 | Lorri |
| Geary | all over | Boston MA | 1850-1930 | Michelle Foley |
| Geoghegan | Galway | Australia | 1820 | Patricia |
| Geraghty | not given | PA | 1800s | Walton J Sullivan |
| Geraghty, Garrety, Garrity | Currabane?, Co Mayo, Galway | Long Island NY | 1854 | Mary Timmons |
| Gerrard | Clonbroney, Castlecomer | Liverpool ENG | 1800-1900 | Wester |
| Gerrard | kilkenny, Longford | Liverpool, Lancashire | 1820-1920 | Wes Paul Gerrard |
| Gerrity | not given | PA, WI | 1800s | Walton J Sullivan |
| Getty | Antrim | PA | 1800-70 | John Getty |
| Ghan | not given | New York USA | bef 1860 | Cheryl |
| Gibbons | unknown | Massachusetts | 1870-85 | Kay Folan |
| Gibbons | Toormore, West Co Mayo | not given | 1910 | MaryPat Carey |
| Giblin | not given | PA | 1800s | Walton J Sullivan |
| Gibson | Belfast | did not emigrate | ca 1850-88 | Muriel Caldwell |
| Giffen | Carnmoney, Antrim | not given | 1808, 1900 | Nancy Jewel |
| Giffen | Belfast | Detroit MI | 1920-22 | Deirdre Donahue |
| Gilday | Cos Sligo, Roscommon | Connecticut | emig-1884 | Judy Cronan |
| Gilhooly | Tipperary Par, Co Tipperary | did not emig | 1814 | Pat Connors |
| Gilhuly, Gilhooly | Roscommon | Ontario CAN | 1829 | Vicki Gilhula |
| Gillard | unknown | Liverpool UK | 1839-47 | Steve |
| Gillen | Donegal | Omaha NE | 1900s | Melisa Gillen |
| Gillespie | Moville, Co Donegal | Hillsborough, Albert Co, N Brunswick, CAN | ca 1838 | Terrence Gillespie |
| Gillick | Co Meath | California | 1855-1906 | Sandy |
| Gilligan | unknown | upstate NY | 1778-1820 | Mary Ingenthron |
| Ginevan | Lyre, Glen of Aherlow, Co Tipperary | not given | 1848-74 | Phyllis Robinson |
| Glynn, Glenn | Galway | Tennessee USA | 1820-50 | Dottie |
| Glover | Co Mayo | Staffordshire, ENG | bef 1850 | Jill Glover |
| Gorman | not given | PA, WI | 1800s | Walton J Sullivan |
| Glynn | Galway | USA | 1824-1850 | Dottie |
| Goold, Gould | Co Clare | did not emigrate | 1860-1901 | Kwirth |
| Gorman | Callan, Co Kilkenny | not given | not given | Marianne Bonner |
| Gorman | unknown | England | early 1830s | Margaret Ward |
| Gough | Mayo, Galway | Manchester UK | 1840s, 50s | Gill Rice |
| Gourley | unknown | Boston MA | 1800s on | Debi Coe |
| Grace | Castlecomer, Co Kilkenny | NY | 1800-1920 | Marilyn Pingue |
| Grace | Callan, Co Kilkenny | Philadelphia PA | from 1846 | Marianne Bonner |
| Grady | Shrule, Co Mayo | New York | 1861 | Colleen Grady |
| Grady | Limerick | NY Wisconsin | 1864-70 | Connie McDonald |
| Grant | Templemore, Co Tipperary | Australia | bef 1852 | Vicki Strickland |
| Grant | poss Co Cork | US | 1850-70 | Kate Fredericksen |
| Grealy | Co Galway | Australia | 1850-70 | Clare Taylor |
| Greenan | unknown | East Lothian | 1840 | Neil Watson |
| Green(e) | Clare | New Haven CT | 1860s | Melody Masi |
| Gregan | pos Kilmaley Par, Co Clare | New South Wales AU | 1800s on | Julia |
| Gribben | not given | not given | not given | Donna Bolton |
| Griffin | Multyfarnham, Co Westmeath | N.S.W., Australia | ca 1840 | Marie Payne |
| Grimes | Dungannon, Co Tyrone | NY | 1855-pres | Judith A Cruse |
| Grimes | Kilfinane, Co Limerick | NYC, AU | not given | Jim Regan |
| Grimsby | Tyrone & Armagh | not given | 1750-1850 | Jessie Engan |
| Grogan | Co. Mayo | New York > PA | 1850s | Anita H Duvall |
| Gubbins | Limerick | Melbourne | 1863 | Kevin Gubbins |
| Gunson | Limerick, Nenagh area | Berks Co., PA | 1835 | Loretta G Darlington |
| Hackett | Leitrim | Ionia MI | 1838 | Patrick Powell |
| Hagarty, Hegarty | Co Longford | PA | 1800-present | Phyllis Edwards |
| Haggerty,Hagerty | Co Cork | Troy, Bklyn, LI Island, NY | 1850-present | Mary Barnett |
| Hall | Monaghan, Fermanagh | Hamilton ONT, PA, IL, MS | 1847 | Jerrian Barsness |
| Hall | Youghal, Co Cork | Sherbrooke, Quebeck | 1836 | William G Hall |
| Hall | Co Monaghan | Ontario | 1813-1900 | David Hall |
| Hallinan | Ennistimon, Co Clare | Australia | any | Melanie |
| Hallinan | Clare | New South Wales AU | 1800s on | Julia |
| Halloran | Galway | Pittsburg PA | 1890 | Thomas J Monahan |
| Halpin | Kilfinane | not given | not given | Jim Regan |
| Halvey | Clarina, Co Limerick | Troy NY | 1889 | Michael E Minahan |
| Hammond | Co Tyrone | USA< WI | 1831-1887 | Bruce R Bucholtz |
| Hanl(e)y | Carrick-on-Shannon, Co Leitrim | Brooklyn NY > Jersey City NJ | 1870-present | Lorraine Hanley |
| Hanley | Co Limerick | Connecticut | 1840-60 | Erin Hanley |
| Hanlon | unknown | Rensselaer Co, NY | 1898-1950s? | Brian Olson |
| Hanlon | Dublin South | South Africa | 1880-1928 | Lloyd Scott |
| Hannifan, Hannafin | Co Kerry, ?Tralee | Kings Co, Nova Scotia, CAN | bef 1850 | Mary Pat Shankle |
| Hannon | unknown | NY | 1816-1891 | Judith A Cruse |
| Hannon | Gorumna Island, Lettermore Dist, Co Galway | MN | 1884-88 | Peg Heitz |
| Hannon | Fermanagh | not given | not given | Anne Marshall |
| Hannon | Delvin | England | 1840 - 1850 | Christine Devine |
| Hardiman | Cloongana, Co Roscommon | not sure | 1870-90 | Lynne Higbie |
| Harrington | Bantry area, Co Cork | N.S.W., Australia | 1878 | Marie Payne |
| Harrington | Cork | Chicago IL | 1850 to present | Marguerite Harrington |
| Hartnett | Co Cork | Troy NY | 1852 | Julie Cashman |
| Hasket | Borrisokane, Co Tipperary | 1832 Toronto, ON, CAN | 1832 | Ruth Wade |
| Hasset(t) | Kilfearagh, Kilkee, Kilrush Co Clare | Elmira NY | 1840 + | Anne Greene |
| Hasson | Londonderry | England | 1850s on | Sheila |
| Hatton, Hutton | Cos Antrim, Down | USA | 1800s-1900s | Sharon Rogers |
| Haughey | Glencolumbkille, Donegal | NY | 1860ish | Rosemary Walker |
| Haveron | Warrenpoint, Co Down | Bundaberg, Qld AU | 1883 | Louise Barry |
| Haverty | Athenry, Galway | Boston MA | 1875-90 | Rick Haverty |
| Hayes | unknown | NY | 1829-1972 | Judith A Cruse |
| Hayes | unknown | Long Island NY | ca 1860s | Mary Timmons |
| Hayes | not given | New York | not given | Barbara Hayes |
| Hayes | Killaloe, Co Clare | Melbourne AU | 1855-present | Leonard Pearsell |
| Healy | Cork | Islington, London ENG | 1870s | Tim Healy |
| Healy | unknown | New Rochelle NY | late 1800s | Pat Connors |
| Healy | unknown | Ironton OH | early 1850s | Bill McDonough |
| Healy | Derry, Knock, Mayo | Chicago>>San Francisco | 1870-1900s | Janet Sandberg |
| Heaney | Ballylig, Renfrewshire | Australia | 1882 | Jeanette Egan |
| Heaphy, Heafey | Waterford | Channel Islands>NZ | 1866, 1870s | Gloria |
| Heenan, Hen(n)an | Clonduff, Castelwellan | Western Canada | 1912 | Heenan |
| Heffernan | Thurles, Tipperary | not sure | 1915 | Patricia Cooper |
| Heffernan | Tipperary | upstate NY | 1800+ | Daniel Mahoney |
| Hemphill | Antrim, Dervock, Derrykeighan | USA-KS | 1800-1910 | Don Johnston |
| Hemphill | Drumkeeran, Fermanahga | Canada, & MN USA | Mary Maki | |
| Henderson | unknown | NY > NJ | 1822-90? | Judith A Cruse |
| Henderson | Derrynoose | Canterbury NZ | 1850-1896 | Allan Kennaird |
| Henderson | Co Donegal | prob Baltimore MD | 1799-1844 | Doris Brostrom |
| Hennessey | Offaly | Newfoundland | 1850-60 | Geri |
| Hennessy | Co Tipperary | NY, PA | not given | Patricia C Coogan |
| Henry | Co Cork | Syracuse NY | emig 1866 | Toni W McCarthy |
| Henry | Balleyjamesduff area, Co Cavan | Canada | 1800-1850 | Shirley Dusyk |
| Heraty | Derrymore, Wesport, Co Mayo | Leeds, West Yorkshire, ENG | 1920s | Mick Heraty |
| Heraty | Ballygolman, Aughagower, Co Mayo | PA > Jerseyville IL | 1868 | Mick Heraty |
| Heraty | Doon, Aughaghour, Co Mayo | CAN > NY > Sheboygan WI | 1802+ | Kay R |
| Hesten,Hestin,Heston | Co. Mayo | NYC > PA | 1855 | Anita H Duvall |
| Hickey | Castleconnell, Limerick | Reidsdale, NSW, AU | 1850-present | Colin B Maloney |
| Higginbotham | unknown | VA, KY, OH, PA | 1700-1900 | Eileen Kightlinger |
| Higgins | Boyle area, Co Roscommon | IL | 1863 on | Pat |
| Higgins | Co Mayo | England | 1852-56 | Keith Darnell |
| Higgins | Co Roscommon | Essex Co. NJ | 1870-1910 | Marie Ippolito |
| Higgins | Cos Sligo, Roscommon | Connecticut | emig-1884 | Judy Cronan |
| Hill | Co Carlow | Australia, USA (Boston?) | AU 1897-1911, later USA | Lesley |
| Hinchey, Hinckey | Crumlin, Antrim, Belfast | Canada | 1800-1900 | Kath Kindle |
| Hingerty | Tipperary | AU, ENG, USA | pre 1830 | Carole Draper |
| Hoare | Dingle, Kerry | New Rochelle NY | 1850-1900 | Pat Connors |
| Hodgins | Dublin | Australia | 1838-43 | Ena Jewell |
| Hoffman | Old Ross, Co Wexford | not given | not given | Kaye |
| Hogan | Dublin | Sydney AU | 1820-1950 | Maggi |
| Holland | Gort, Galway | MA | 1800s - 1900s | Linda Jackson |
| Holleran | Crossmolina, Co Mayo | Leeds, W Yorkshire ENG | 1860-90 | Francis Holleran |
| Holuhan, Holleran | Stradbally, Co Waterford | 1860 Lancashire Eng > 1866 USA | 1855-65 | Thomas F Travis |
| Hope | Co Meath or Westmeath | Pennsylvania USA | 1830s | Janet H Clifton |
| Hopkins | Northern Ireland | Canada, Australia, USA | 1830-90 | Debbie |
| Horan | Golden, Tipperary | Manchester, CT | 1867-1930 | John |
| Horgan | Co Kerry | Pembroke, Wales UK | 1840- | Shirley-Ann Walker |
| Hornell | Ireland | Scotland | 1750+ | Barry Hornell |
| Hornigh etc | Old Ross + Co Wexford | Kent, Grenville, etc. Ontario | ca 1849-50 | Kaye |
| Horvath | Carrickbanagher | USA, Canada, UK | ca 1800 | Benson Horvath |
| Horvath | Sligo | MA, NY | 1890- | Marie T |
| Hourigan | Limerick | Victoria, AUS | 1862 | Ruth Warner |
| Houston | Londonderry, Antrim | Scotland | 1805 to present | Cathy |
| Howard | Kerry | Chicago | 1900 | Nan Brennan |
| Howard | Bruree, Co Limerick | Australia, England | 1840-50s | Diane Johns |
| Howard | Clonoulty par, Co Tipperary | not given | 1750+ | Linda Hansen |
| Howley | Malcock? | Durham | 1840-60s | Nicki Crutcher |
| Hughes | Keeloughes, Co Mayo | not given | 1850 | MaryPat Carey |
| Hunt | Co Roscommon | St Louis | 1847-present | Ellen Naliboff |
| Hunter | Taughbone Par, Co Donegal | Philadelphia | 1880 | Joe Hunter |
| Hunter | Ballyjamesduff, Co. Cavan | Australia | 1800-1840 | Laurie Thompson |
| Hurley, Herlihy | Co Cork | MA & CA, USA | 1800s | Velda Draper |
| Hurst | Carbury, Co Kildare | 1849 | 1800-1859 | Jeannette M Schneider |
| Hyland | near Dublin | USA | 1853-60 | Coleen Coleman |
| Irwin | Co Down | Ontario CAN | 1700s-1850s | Jennie Norton |
| Irwin | Skreen, Co Sligo | England | 1920-present | John Irwin |
| Jackson | Co Monaghan | OH | 1700-1840 | Jack Burchenal |
| Jacruse | Coalisland, Co Tyrone | NY | 1812-1906 | Judith A Cruse |
| James | Ballyheigue, Co Kerry | Philadelpha PA>Iowa | 1868 | Valerie C James |
| Jenkinson | Co Armagh | did not emigrate | 1840-1954 | Brendan McCabe |
| Jessop, Jessup | Laois, Offaly | Ontario CAN; OH, PA, USA | 1840s | Mark G Jessop |
| Jessop, Jessup | not given | Gaspe coast, Quebec | 1810-50 | Lani Mitchell |
| Johnston | Dundrum, Co Tipperary | New Zealand | 1750+ | Linda Hansen |
| Johnston | Belfast | PA, USA | 1793 | John Johnston |
| Johnston | Antrim, Dervock, Derrykeighan | Australia, USA-KS | 1800-1930 | Don Johnston |
| Joint | Limerick | Acord, Kingston NY | 1845-present | Judy Christopher |
| Jordan | Kildare | Manchester ENG | 1800s | Joseph Wright |
| Ireton | Co Carlow, Wicklow | Ontario CAN | ca 1850-54 | S Glassford |