Jan Rochusz Koogje ⁶

Jan married Cornelia Jans den Ouden, daughter of Jan Barends den Ouden and Hendrikje Snels Bakker, on 31 august 1814 in Berkenwoude.⁶ (Cornelia Jans den Ouden was christened on 11 may 1783 in Stolwijk ³¹ and died on 27 july 1850 in Stolwijk ⁶.)

Jan also married Aaltje Pieters Zuidam, daughter of Pieter Dirks Zuidam and Neeltje Gerrits de Jong, on 17 april 1852 in Stolwijk.⁶ (Aaltje Pieters Zuidam was christened on 23 april 1791 in Haastrecht ³¹ and died on 8 september 1859 in Stolwijk ⁶.)