 Bertus Marinus Backer PRIVACY FILTERMarriage/ Related to:  Sientje Stibbe - Polak PRIVACY FILTER1st marriage/ related to: Jozef Looper - Stibbe, 2nd marriage/ related to: Bertus Marinus Backer. Daughter of Nathan Stibbe - van den Berg and Jansje Polak | |||