Siebe Grijpma, born in Hitzum on February 28, 1890, son of Willem Grijpma (farmer's hand) and Akke Bootsma.

Siebe was married in Franekeradeel on May 16, 1914, at the age of 24 to
Antje Wijnalda (aged 23 years), born in Arum on December 15, 1890, daughter of Robijn Wybrens Wijnalda (worker) and Klaaske Elzinga, maid servant.