Coenraad married Sytsma Grietje on 10 Mar 1972 in Achtkarspelen. Grietje (daughter of Sytsma Romke Pieters and Kamminga Anna Wiebes) was born on 18 Mar 1953 in Gerkesklooster; was christened on 29 Mar 1953 in Gerkesklooster; died on 23 Jul 2007 in Groningen. [Group Sheet]