Jonas married Mary B. McFarlane on 17 Sep 1861 in Fayette Co., Iowa, USA. Mary (daughter of Daniel Macfarlane and Agnes (or Nancy) McFarlane) was born in Thornhill, Kincardine by Doune, Perthshire, Scotland; was christened on 28 Sep 1839 in Kincardine parish, Perthshire, Scotland; died on 11 May 1923 in Scott, Fayette, Iowa, USA; was buried on 13 May 1923 in Groat Cemetery, Arlington, Fayette, Iowa, USA. [Group Sheet] [Family Chart]