(1906-1965)
+---Ian Bell Breckenridge (1940-)
| | +---Herbert Radford (08 MAY 1874-30 APR 1953)
| +---Jessie Radford 
(1905-1993)
| | +---William Smith (-1861)
| | +---Thomas Smith (ABT 1803-07 JAN 1889)
| | | +---Elizabeth Harris
| | +---John Thomas Smith (09 JAN 1841-18 NOV 1902)
| | | +---Lucy Clarke (ABT 1806-1873)
| +---Elizabeth Smith (31 AUG 1874-04 JAN 1961)
| | +---John Bizley
| | +---Isaac Bizley (DEC 1819-)
| +---Emma (Emily) Bizley (10 APR 1846-07 APR 1925)
| | +---James Tucker
| +---Mary Ann Tucker (07 OCT 1818-)
Peter Breckenridge
+---Audrey Thomas (1942-)