Lazarus Jochem Vrieslander married Martha Sigaar on 6 January 1943 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Lazarus Jochem Vrieslander
In addition, a Jokos file (number 55299) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.