Bessie Brock was born 23 July 1893 to Jeptha S. Brock (1854-1911) and Susan Arvanzine Holmes . She married James Robert Thornhill 19 November 1916 .
Children
| Name | Birth | Death | Joined with |
| Ava Thornhill | |||
| James Robert Thornhill, Jr. | |||
| Talmadge Brock Thornhill | |||
| Betty Jean Thornhill | |||