up to the 12th generation
0─┬
Babs Lawrence 1918-1999 & Ronald Rodker 1923
├─1──
Jacqueline Mary Rodker 1949 & Robert Houlston
└─2─┬
Judith Rodker 1955 & Peter Illman
├─1──
Lorna Rodker 1982
└─2━━
Philip Rodker 1985
Total: 4 descendants (8 individuals with spouses)