+---Thomas Bone (ABT 1780-JAN 1844)
| +---Rebecca Boney 
Charles Bone (ABT 1824-)
| +---William Blackmore
+---Frances (Fanny) Blackmore (ABT 1781-MAR 1849)
| +---Peter Birt
+---Grace Seage Burt (ABT 1755-)
| +---John Tregenza
+---Mary Tregenza (ABT 1725-)
+---Grace Seage