| Family Name | Source of Relationship |
|---|---|
| Kaiser | Related to me through multiple DNA matches. |
| Kavanagh | Related to me by a Kavanagh marrying my 2nd cousin, 2x removed, Bridget McCabe. |
| Kearney | Related through my 4th cousin Sheila (nee Moore) McCoy. |
| Keefe/O'Keefe | My Keefe/O'Keefe family connections, including the family of my paternal grandmother, Gertrude A. O'Keefe. |
| Keelan | A Keelan family of Co. Monaghan related through at least three DNA connections to me. |
| Keely | Joseph and Catherine (nee Killoren) Keely's daughter, Catherine (nee Keely) Walsh, was a great-aunt of Samantha Walsh, who has a DNA match to me. |
| Keenan - Co. Louth | Some Keenan families related to me through my Co. Louth McCabe family. |
| Keenan - Co. Monaghan | Some Keenan families related to me through my Co. Monaghan Kernan family. |
| Kellett | Related through the family of my DNA cousin Pedar Duffy. |
| Kelly | Related through the family of my great aunt Mary (nee O'Brien) Murphy. |
| Kennedy | Related through descendants with DNA matches to me and other members of my extended family. |
| Kenney | There are currently three known Kenney families that have connections to me. |
| Kernan-1 | My direct maternal line currently traced back to the Carrickmacross area of Co. Monaghan |
| Kernan-2 | A Kernan family related by marriage through my Geortler/Cannan Connections |
| Kerrigan/Corrigan | Kerrigan/Corrigan family with a DNA connection to me. |
| Kierans | Descendants of my great aunt Bridget (nee McCabe) Tierney, through her daughter, Bridget "Delia" Elizabeth (nee Tierney) Spillane. |
| Kiesling | Related to me through several DNA connections. |
| Kossler | "My" Kossler family is related through two sets of my Co. Louth, Ire. 3x great grandparents. |