Willem De Clercq
- Born: 15 Jan 1795, Amsterdam, Noord-Holland, Netherlands
- Marriage (1): Caroline Charlotte Boissevain on 29 Jul 1818 in Amsterdam, Noord-Holland, Netherlands
- Died: 4 Feb 1844, Amsterdam, Noord-Holland, Netherlands at age 49
Willem married Caroline Charlotte Boissevain, daughter of Daniel Boissevain and Johanna Maria Retemeijer, on 29 Jul 1818 in Amsterdam, Noord-Holland, Netherlands. (Caroline Charlotte Boissevain was born on 4 Sep 1799 in Amsterdam, Noord-Holland, Netherlands, christened on 15 Sep 1799 in Amsterdam, Noord-Holland, Netherlands and died on 23 Nov 1879 in Amsterdam, Noord-Holland, Netherlands.)
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