Salomon Hoogstraal was a son of Hartog Hoogstraal and Geertje Nieweg. He married 12 October 1902 in Assen to Carolina Bernard, a daughter of Ephraim Bernard and Frouke van Hessen.
The couple had nine children; one daughter left with her husband to Bandung (Dutch East Indies); another daughter has survived the war however not her husband Heinz Rafael Silberberg. The seven other children, Geertje, H…