Cornelis married Martzen Jans Boonstra on 25 Jan 1820 in Utingeradeel, FR, NLD. Martzen (daughter of Jan Pieters and Lutske Douwes) was born on 13 Aug 1795 in Oldeboorn, FR, NLD; died on 21 Dec 1840 in Oldeboorn, FR, NLD. [Group Sheet] [Family Chart]

1. Andriesje Cornelis Bijkerk was born on 17 Apr 1820 in Oldeboorn, FR, NLD; died on 01 Jul 1820 in huis 71, Oldeboorn, FR, NLD.
2. Harmen Cornelis Bijkerk was born on 12 Jul 1821 in Oldeboorn, FR, NLD; died on 25 Nov 1903 in Leeuwarden, FR, NLD.
3. Jan Cornelis Bijkerk was born on 31 Oct 1823 in Oldeboorn, Utingeradeel, FR, NLD.
4. Andries Cornelis Bijkerk was born on 03 Oct 1826 in Oldeboorn, FR, NLD; died on 03 Nov 1826 in huis 15, Oldeboorn, FR, NLD.
5. Andries Cornelis Bijkerk was born on 29 Aug 1828 in Oldeboorn, FR, NLD; died on 07 Jan 1832 in huis 234, Oldeboorn, FR, NLD.
6. Lutske Cornelis Bijkerk was born on 08 May 1831 in Oldeboorn, FR, NLD; died on 27 Jul 1916 in Leeuwarden, FR, NLD.
7. Andries Cornelis Bijkerk was born on 26 Dec 1834 in Oldeboorn, FR, NLD; died on 17 Mar 1862 in Oldemarkt, OV, NLD.

Cornelis married Andriesjen Hofstra on 27 Jun 1841 in Utingeradeel, FR, NLD. Andriesjen (daughter of Trijntje Jochums Hofstra) was born about 1820 in Langezwaag, Opsterland, FR, NLD. [Group Sheet] [Family Chart]

Harmen married Andriesjen Dirks de Boer. [Group Sheet] [Family Chart]