Frits Winter and Louise Bensneyder had a daughter called Ellen Ludwig Winter who's born in Den Haag 22 September 1933. I lost and couldn't find the rest of Frits and Louise sibbling.
On the other side I found my grandfather maternal family. Bernard Lazarus Walsen ( born 1867 ) married Maria Matheos. Their daughter Isabella Juliana Walsen married Jacob Anton Mulder with 5 children. One of them is my grandfather Frederik Albert Mulder, married Ellen Ludwig Winter. This is where I stucked, I have no record of who is Jacob Anton Mulder's father and mother or his grandparents. I also have no record of Frits Winter and Louise Bensneyder family tree.