Joseph Philipus Wassenaar
- Born: 23 Aug 1860, Leiden, , Zuid-Holland, Netherlands
- Marriage (1): Johanna Catharina Verwer on 27 Dec 1888 in Amsterdam, , Noord-Holland, Netherlands
- Died: 22 Mar 1932, Weesp, , Noord-Holland, Netherlands at age 71
Joseph married Johanna Catharina Verwer, daughter of Hendrik Verwer and Geertrui Buitendijk, on 27 Dec 1888 in Amsterdam, , Noord-Holland, Netherlands. (Johanna Catharina Verwer was born in 1861 in Leiden, , Zuid-Holland, Netherlands and died on 15 Apr 1941 in Leiden, , Zuid-Holland, Netherlands.)
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