Family with parents
father Parents GerritSlotboom Gijsbertjevan Eck	GerritSlotboom 1876–1941
mother Parents (unknown)	Johannavan Ee 1878–1954
elder brother Family JannetjeRoks GerritSlotboom GerritSlotboom RoelofjeSlotboom Private Private Private Private	GerritSlotboom 1899–1959
elder brother Family Jannavan den Berg	HendrikSlotboom