Salomon Hagenaar, son of Hartog Hagenaar and Leentje Groen, married Eva van Dal, daughter of Gerrit Samuel van Dal and Debora Pronk, on 29 May 1901 in Weesp. Their marriage certificate remains.
Jewish Historical Museum, Documents collection, inv.nr 6506
Salomon Hagenaar and Eva van Dal had a son Gerrit.
Stadsarchief Amsterdam, archiefkaart Gerrit Hagenaar
In addition, a Jokos file (number 32888) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.