Elisabeth de Vries was a daughter of Isaac de Vries and Flora Onderwijzer. She married 21 August 1923 in Amsterdam to Louis de Lange, a son of Salomon de Lange and Flora Root.
Elisabeth had two other siblings, Adolf and Samson, who have been killed to during the Shoah.
City Archive of Amsterdam, archive card of Isaac de Vries and website www.wiewaswie.nl.