Chart 1     [† means all children believed found, ‡ means death is computed at 112 years]

Grasse, Mary (b:)(d:)
 . . . . .Volkmann, August Otto (b:1860)(d:)[with: Volkmann, William]
 . . . . . . . . . .Volkmann, Gustave A (b:1896)(d:1964)[with: Goldbeck, Bertha W C]
 . . . . . . . . . . . . . . .Volkmann, Arles M (b:1926)(d:2018)[with: Schmidt, Elda Pauline Edith]
 . . . . . . . . . .Volkmann, Emil (b:1899)(d:1955)[with: Goldbeck, Bertha W C]
 . . . . . . . . . .Volkmann, August Otto Jr (b:1902)(d:1976)[with: Goldbeck, Bertha W C]