up to the 12th generation
0━┳
Ernest Rodker 1937 & Sonie Markham 1939-2016
┣━1━┳
Oliver Rodker 1969 & Jennifer Nelson
┃ ┣━1━━
Isaac Lea Rodker 2015
┃ ┗━2──
Rosa Rodker 2019
┗━2━━
Joel Rodker 1976
Total: 4 descendants (7 individuals with spouses)