Isaac Schreeuwer was a son of Aaron Schreeuwer and Sara Sealtiel. In 1918, after his father's death, he was placed in an orphanage. Later he was sent away from the orphanage because of supposed bad behaviour. In 1942 he went to work camp Sellinga.
Stadsarchief Amsterdam, Archief van de gemeentelijke sociale dienst, inv. nr. 1639, dossier 16909