Sara Querido was a daughter of Levie Querido and Roosje Lever. She married in Utrecht on 27 November 1929 to Levie Israel Hilversum, son of Nathan Hilversum and Jantje van der Horst. The couple had 3 children: Nathan Levie, Levie Abraham who both have died in childhood, and Rosa Jenny.
City Archive of Amsterdam, archive card of Levie Israel Hilversum and Het Utrechts Archief, index Civil Registry/peoples names.
Sara Hilversum-Querido lived separated from her husband Levie Israël Hilversum.
Stadsarchief Amsterdam, map archive Levie Israël Hilversum