| Family Name | Source of Relationship |
|---|---|
| Gaffney | Related through my great, great uncle Henry McCabe's Family |
| Gallagher | TSeveral Gallagher families related to me, some by marriage, some by DNA. |
| Gareau | Related through my DNA connection to a Gareau grandson, Rory Hodsdon. |
| Garvey - Co. Mayo, Ireland | Co. Mayo family related through DNA connections to me. |
| Garvey - Co. Monaghan, Ireland | Related through my great uncle John Kernan's Family |
| Geary | Related through DNA connections to my DNA cousin Éamonn Mac Rodáin's Family |
| Gensheimer | My Aunt Peggy's (Margaret McCabe, daughter of James Michael and Gertrude (nee O'Keefe) McCabe) married name. |
| Geortler | My mother's maternal grandmother's maiden name. |
| Gibbs | Related through my Jecker famly |
| Gilpin | Related through my Henry McCabe Family |
| Glover | Related through my O'Keefe Family |
| Goddard | Related through my O'Keefe Family |
| Gonnelly | Related through my DNA match to Jayne Doherty and to John Hagan. |
| Goodman | Related through my Finnegan family of County Monaghan, Ireland |
| Gormley | Related through the Hall family DNA connection to my McCabes. |
| Gray | Related through my DNA match to a Farrelly family descendant. |
| Gress | Related through my 3x great grandparents, Nicholas and Betty Murphy of Co. Louth. |
| Grimes | Related through a DNA match between the Grimes' 2x great granddaughter, Marie T. (nee Morrissey) Thackery, and me |
| Grogan | Related through my great aunt Margaret McCabe, daughter of Peter and Bridget (nee Murphy) McCabe. |
| Gurreri | Related thru a descendant with a DNA match to me. |