1 Kätners Harm WITTHÖFT =Catharina HEVERS 2 Maria Elisabeth WITTHÖFT =Heinrich KNOOP Marriage: 30 Dec 1888 3 Maria KNOOP 3 Emma Catharina KNOOP =Hermann Hans KIEHN Marriage: 11 Aug 1912, Altengamme, Duitsland =Otto Julius KIEHN 3 Julius Hermann KNOOP 3 Frieda KNOOP =Diedrich Wilhelm HOLTEN von Marriage: 15 Aug 1926, Altengamme, Duitsland