Roelof was born September 26, 1870 in Anloo, Drenthe, Nederland. 
His father is Roelof Beukinga (1833 Anloo-1916 Anloo).
His mother is Grietje Geerts (1844 Haren-1926 Anloo).
Roelof Beukinga, a 31 year old arbeider (laborer). married Aaltje Hamminga, 25 years old, in Anloo, Drenthe on May 31, 1902. She was born in Annen, Drenthe and is the daughter of Jan Hamminga (1837 Kropswolde-1895 Annen) and Annechien Seggers (1842 Annen-1902 Annen).