Hendrik Kijlstra, born in Groningen on February 7, 1900, son of Gerhardus Kijlstra (vleeschhouwer) and Jantje Holsteijn, fishmonger.

Hendrik was married in Groningen on October 8, 1925, at the age of 25 to
Anna Elerie (aged 22 years), born in Bochum on January 17, 1903.