| Family Name | Source of Relationship |
|---|---|
| Barnhart | Related through my Keefe/O'Keefe family |
| Barron | Related through my Whiteriver, Co. Louth, Ireland McKenna/McCabe family. |
| Betz | Related through my great, great grandparents, Michael and Mary (nee Hewitt) Morrissey. |
| Birchill | Related through the DNA match between me and my DNA cousin, Michael Carragher. |
| Birry | Related through my Jecker family |
| Boest | Married name of a Trainor that has Campbell relatives that have DNA matches to me. |
| Bock | Related through my great aunt and great uncle Mary (nee O'Brien) and Michael Murphy family. |
| Boyce | There is a Boyce descendant, married to a McCormack, with that McCormack being related to my McCabes thru DNA tests. |
| Boyer | Related through the family of my great aunt Mary (nee O'Brien) Murphy. |
| Boylan | Related through my DNA match to a Farrelly family descendant. |
| Boyle | Related by marriage through my Finnegan family of County Monaghan, Ireland. |
| Branigan | Most likely my great, great aunt Anne McCabe's family. |
| Braun | Related through my great uncle Erwin Jeker's family. |
| Brennan | Related thru Thomas McCabe/Bridget Wall Family; Also thru Henry McCabe family. |
| Brogan | Related through a DNA connection to me and my distant cousin Marie "Michie" Michel McCabe-Velardi. |
| Burns | Related to multiple Burns families. |
| Butler | Related through my great aunt Bridget (nee McCabe) Tierney, daughter of Peter and Bridget (nee Murphy) McCabe. |
| Byrne - Co. Dublin | Related through my autosomal DNA connection to Mariam White. |
| Byrne - Co. Londonderry | Related through my DNA cousin Éamonn Mac Rodáin's extended family. |
| Byrne - Co. Louth | Related through my great aunt Elizabeth McCabe, daughter of Peter and Bridget (nee Murphy) McCabe. |
| Byrne - Co. Monaghan | Related through my Kernan/Connor Connection |