Children:
- Vroukje Willems Merkurius was born on 21 Oct 1807 in Bovenknijpe, Schoterland, FR, NLD; died on 12 May 1894 in no. 51, Oldeboorn, Utingeradeel, FR, NLD.
- Alle Willems Merkuur was born about 1811 in Knijpe, Schoterland, FR, NLD; died on 04 Jan 1894 in Schoterland, FR, NLD.
- Thijs Willems Mercuur was born on 19 Aug 1815 in Knijpe, Schoterland, FR, NLD; died on 16 Jun 1892 in Schoterland, FR, NLD.
- 1. IJbele Willems Merkuur was born on 28 Nov 1822 in Schoterland, FR, NLD; died on 22 Dec 1846 in Schoterland, FR, NLD; was buried on 28 Dec 1846 in Knijpe, Schoterland, FR, NLD.
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