Helena Schijvenschuurder, daughter of Eva Jacoba Schijvenschuurder, was married to Mozes Ritmeester, from 1931 till 1939. In that marriage they got a daughter, Sara.
In juni 1940 Helena Schijvenschuurder married mr. Zwaaf who survived the war.
Amsterdam City Archives, personscard Helena Schijvenschuurder
Stadsarchief Amsterdam, archiefkaart Helena Schijvenschuurder