Arthur married Alma Marie Senne on 22 Nov 1907 in Fairmont, Martin County, Minnesota, USA. Alma (daughter of Johann Conrad Wilhelm Senne and Alvina Scharringhausen) was born on 26 Jul 1891 in Fraser Township, Martin County, Minnesota, USA; died in 1969 in Welcome, Martin County, Minnesota, USA. [Group Sheet] [Family Chart]

1. Michael John Klein was born on 8 Jul 1909 in Welcome, Martin County, Minnesota, USA; died on 30 Dec 1950.
2. Albert Klein was born on 30 Mar 1911 in Welcome, Martin County, Minnesota, USA; died on 1 Jan 1913.
3. Augusta Dorothy Klein was born on 26 May 1913 in Welcome, Martin County, Minnesota, USA; died in Mar 1977.
4. Elma Martha Amelia Klein was born on 21 Feb 1915 in Welcome, Martin County, Minnesota, USA; died on 30 Aug 1994 in Chicago, Cook County, Illinois, USA.
5. Lillian Margaret Klein was born on 19 Nov 1916 in Welcome, Martin County, Minnesota, USA; died in Apr 1979.
6. E.W.H. Klein
7. I.E.E. Klein
8. Adolph Walter Klein was born on 6 Feb 1921 in Welcome, Martin County, Minnesota, USA; died on 31 Dec 1953.