Children:
- 1. Willem Cornelis
- Tietje Cornelis
- Antje Cornelis
- Jacob Cornelis Sikma died on 28 Dec 1824 in huis 18, Roodkerk, Dantumadeel, FR, NLD.
- Auke Cornelis Sikma died on 22 Nov 1826 in no. 61, Oenkerk, Tietjerksteradeel, FR, NLD.
- Aukje Cornelis Sikma died on 12 Nov 1831 in huis 23, Oudkerk, Tietjerksteradeel, FR, NLD.
- Romke Cornelis
- Simkje Cornelis
- Geert Cornelis Sikma died on 18 Dec 1834 in no. 28, Oudkerk, Tietjerksteradeel, FR, NLD.
- Grietje Cornelis
- Eelkje Cornelis Sikma was born on 17 Feb 1761 in Roodkerk, Hennaarderadeel, FR, NLD.
- Isaac Cornelis was born on 27 Oct 1762 in Roodkerk, Hennaarderadeel, FR, NLD.
- Antje Cornelis
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