up to the 12th generation
0─┬
Louisa Longland 1887-1971 &1924 David Rodker 1872-1945
└─1━┳
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: 5 descendants (10 individuals with spouses)