(1959-)
Brett Joseph Osborne (1988-)
| +---Joseph Leslie Montrose Dennett (06 APR 1880-MAY 1963)
| +---Colin Leslie Montrose Dennett (10 MAR 1938-)
| | | +---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)
| | | +---William Smith (07 DEC 1870-16 JUN 1951)
| | | | | +---John Bizley
| | | | | +---Isaac Bizley (DEC 1819-)
| | | | +---Emma (Emily) Bizley (10 APR 1846-07 APR 1925)
| | | | | +---James Tucker
| | | | +---Mary Ann Tucker (07 OCT 1818-)
| | +---Emily May Smith (07 MAY 1907-16 JUL 1978)
| | | +---Alexander Paterson
| | +---Rose Ann Paterson (18 AUG 1878-27 JUL 1961)
| | +---Mercy Ann Ford
+---Toni Michelle Dennett (02 JUN 1963-)
+---Marjorie Robinson (03 MAY 1941-)