Jancke Sibrens Name:Jancke Sibrens Gender:female Born: Died: Father: Mother: Marriage: Rombertus Ockema (1616 - 1665), Leeuwarden 1646-08-01 References Primary sources Tresoar, Leeuwarden: DTB-registers provincie Friesland (toegangsnummer 28), 901: s.p., 930: s.p., 930: s.p., 930: s.p., 931: s.p. & 976: s.p.