[to the [nth (generation)] generation]
0━┳
Owen Douglas Marks 1924 &1946 Vida Gwen Scudds 1925
┣━1──
Marilyn Adelle Marks 1948 &1967 Brian Edson Ivas 1947
┗━2──
Robyn Priscilla Marks 1951 &1973 Martin Patrick O'Loughlin 1952
[total][:] 2 后代 (6 [persons] [with] [spouses])