To rvk.
Dear rvk,
This Catharina Frank was born 10 years after her sister Catharina Samuel Salomon Frank!
It's not very likely that there were 2 sisters of the same name in the same family. Or the first one died prematurely,
which is not the case.
Do you have any proof of this marriage? Will be interesting to hear of it.
Simon L.Wijnbergen.