up to the 12th generation
0━┳
Ronald Rodker 1923 & Babs Lawrence 1918-1999
┣━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)