up to the 12th generation
0━┳
Frederick McMarquis &ca 1923 Phyllis K. M. Scutt ca 1903-
┣━1──
Barbara Alice Maude McMarquis 1924-2007 &1945 Norman Dale Wohlfarth †
┗━2━┳
Douglas McMarquis ca 1935 &ca 1960 May ------
┣━1──
Catherine McMarquis
┣━2──
Susan McMarquis
┗━3──
------ McMarquis †
Total: 5 descendants (9 individuals with spouses)