Gerrit Jelles Bijlsma, born in Tzum on March 1, 1823, son of Jelle Gerrits Bijlsma and Sipkje Jacobs Hilverda.

Gerrit was married in Franekeradeel on January 5, 1856, at the age of 32 to
Dieuwke Franses Bergsma (aged 31 years), born in Arum on October 22, 1824, daughter of Frans Feikes Bergsma (jobless, peat barge proprietor, schuiteboer, worker and worker) and Trientje Sjoerds Bastien (daily help), maid servant, died in Tzum on February 28, 1882, aged 57 years.
Dieuwke was married before in Franekeradeel on May 19, 1849, at the age of 24 to Jan Taekes Greidanus (aged 27 years), born in Hijlaard on July 9, 1821, son of Taeke Sybes Greidanus and Wijbrig Feikes Bijlsma, farmer, died in Tzum on February 25, 1855, aged 33 years.