Folmer married Ida Dorthea Højberg on 17 Apr 1938 in Skærbæk Kirke, Skærbæk Sogn, Tønder Amt. Ida (daughter of Jens Peter Christian Højberg and Caroline Nielsen) was born on 29 Apr 1907 in Vestergaard, Arrild Sogn, Tønder Amt; was christened on 2 Jun 1907 in Arrild Kirke, Arrild Sogn, Tønder Amt. [Group Sheet] [Family Chart]