1 Hilke HARTMAN =Eilko KNOOP Marriage: 19 Nov 1874, Wildervank, Groningen, Nederland 2 Harm Cornelis KNOOP =Geertruida Catharina MENSEMA Marriage: 31 Oct 1906, Hoogezand 3 Hilda Biena KNOOP 3 Bina Annechiena KNOOP 3 Catharina Geziena Henderika KNOOP