Martijn Henri de Vries was a son of Hartog de Vries and Sophia Adriana Juliette de Boer. He married Sellie Nieuwkerk in Amsterdam on 17 November 1934, a daughter of Karel Benjamin Nieuwkerk en Carolina Fischel. The couple had two childreen, Martijn Henri and Carolijn Sophie, who both have been killed in the Shoah too.
Martijn Henri had another sister, Esther Hanna who left for Tel Aviv in 1936 an…