Salomon van Engel was a son of Daniel van Engel and his 2nd spouse Sara Frank. He married in Amsterdam on 4 June 1914 to Aaltje Kleerekoper, a daughter of Isaac Kleerekoper and Judic Rebecca Bachra. Aaltje Kleerekoper has survived the Holocaust.
From a previous marriage of his father to Francisca Grunwald, two half-brothers were born: Mozes Aron van Engel and Nathan van Engel.
After the death of h…