I'm trying to find my ansesters....

[anaesthetist]

if you're still looking for your ancestors, this might be the family:
https://www.archieven.nl/maisi_ajax_proxy0.php?mivast=0&mizig=310&miadt=184&miaet=185&micode=494-03&minr=16353954&milang=nl&misort=last_mod%7Casc&mibj=1880&miej=2000&mip1=l*n*%7Cja*ob*&mip2=de&mip3=kr*ij*&miview=viewer2

Jakob Hertog passed away on 19.02.1946 in Rotterdam: https://www.archieven.nl/maisi_ajax_proxy0.php?mivast=0&mizig=310&miadt=184&miaet=185&micode=999-09&minr=29229282&milang=nl&misort=last_mod%7Cdesc&mibj=1880&miej=2000&mip1=l*n*%7Cja*ob*&mip2=de&mip3=kr*ij*&miview=viewer2