Mozes Weening was a son of Abraham Weening and Marianne Voet . He had four other brothers and two sisters, among them Samson, Salomon, Sara, en Jacob. One brother and sister survived the Holocaust.
Mozes married in Amsterdam on 23 June 1904 to Elsje Barends. The couple had two sons.
Genlias and City Archive of Amstleram, archive card of Mozes Weening.