He is married to Maartje Huijsman.
They got married
Huwelijks-akte Hermanus Beuker & Dieuwke van der Veer huw. 1913. Burgerlijke stand. Database with images. “Netherlands, Noord-Holland, Civil Registration, 1811-1950”. The Church Of Jesus Christ Of Latter-Day Saints. FamilySearch. https://www.familysearch.org/ : 2019–2020.
Tresoar. OpenArchief. Database. https://www.openarch.nl/ : 2019–2021.