Isidore Weijl was a son of Louis Weijl and Rosalie Nieuwkerk. He lived with his mother in Amsterdam, who was widowed in June 1933, after having resided in the years of 1922-1928 also in Antwerp, where he traded in diamonds and as such was registered in the Antwerp Dossier of Foreigners.
He was unmarried.
City Archive of Amsterdam, archive card of Isidore Weijl and the Dossier of Foreigners of the City of Antwerp, nr. 196592..
Biography