| Abbreviation | Definition |
|---|---|
| BGMI | Biography and Genealogy Master Index |
| BGSG | Black Genealogy Search Group |
| Bib. | Bible |
| BK | BooK |
| BP | Birth Place |
| BPB | Borough Poll Books |
| BR | BRother |
| BRIG | Briggs |
| BR-L | Brother-in-Law |
| BRO | Brother |
| BT | Baronet |
| bur. | buried |
| BVGS | Bega Valley Genealogy Society |
| c. | about, (circa [Lat.]) |
| c. | Circa (approximately) |
| C. | Comitis (count) |
| CA | Circa (about) |
| ca. | about (circa [Lat.]) |
| ca. | approximately (circa [Lat.]) |
| CAD | Descriptive Catalogue of Ancient Deeds |