Family with parents
father
Parents
Heinrich Friedrich WilhelmWittrock
Meta GesinaHappe
Carl Heinrich FriedrichWittrock
1856–1934
mother
Parents
Albertusvan den Bosch
Dirkjevan der Meijden
Herminavan den Bosch
1870–1943
herself
Family
Johannes HendrikusBielevelt
HerminaWittrock
1897–1918
younger sister
Family
Johan BernardNacken
  • Private
HenniWittrock
1898–1975
younger sister
Family
(none)
FredriekaWittrock