Herman Loonstein was a son of Jacob Loonstein and Naatje Speijer. He married on 30 April 1924 in Arnhem to Sibilla de Jong, daughter of Meijer de Jong and Saartje Frankfort. The couple had 3 children: Nanny, Jacob Meijer (who both survived the Holocaust) and Sara.
City Archive of Amsterdam, archive card of Herman Loonstein.
In 1951 the Dutch Red Cross established that Herman Loonstein died betwee…