Benjamin de Leeuw and Sara van der Linde married in 1904 in Amsterdam. They had two children: Roosje and Asser.
Stadsarchief Amsterdam, archiefkaart Benjamin de Leeuw
In addition, a Jokos file (number 9689) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.