Arthur married Cora Louise Seitz on 4 Apr 1908 in Alden, Erie County, New York, USA. Cora (daughter of John Frederick Seitz and Louise Staub) was born on 12 Jun 1887 in Alden, Erie County, New York, USA; died on 30 Mar 1975 in Alden, Erie County, New York, USA. [Group Sheet] [Family Chart]

1. Robert Arthur Heist was born on 23 Oct 1914 in Alden, Erie County, New York, USA; died on 28 Feb 1998.