 Siegfried Hein Menko - CohenBorn 5- jun 1899 Enschede, Netherland. Son of Herman Menko/ Vo and Laura Bertha Cohen Marriage/ Related to:  Esther Antonia Boas - KatanBorn 10-1-1902 Rotterdam, Netherland. Daughter of Simon Boas - Logger and Mietje Katan - van der Heijm Child: | |||