1 Roelof KNOOPS(MA) =(Unknown) 2 Harmen Roelofs KNOOPS(MA) =Hiske GERRITS Marriage: 2 Dec 1753, Kollum, Friesland, Nederland 3 Gerrit Harmens KNOOPS(MA) =Aukje Pieters RUWERSMA Marriage: 20 May 1792, Kollum, Friesland, Nederland