Irvin married Alice Florence Houck in 1893 in Pennsylvania, USA. Alice (daughter of William Henry Houck and Regina Anne Long) was born on 20 Aug 1871 in Indiana County, Pennsylvania, USA; died in in Indiana County, Pennsylvania, USA; was buried in East Mahoning Cemetery, Grant Township, Indiana County, Pennsylvania, USA. [Group Sheet] [Family Chart]

1. Myrtle B. Nupp was born on 28 Jul 1894 in Indiana County, Pennsylvania, USA; died on 18 Mar 1897 in Indiana County, Pennsylvania, USA; was buried in East Mahoning Cemetery, Grant Township, Indiana County, Pennsylvania, USA.
2. Ethel Nupp was born in 0Mar 1897 in Indiana County, Pennsylvania, USA.
3. Glenn Nupp was born in 1900 in Indiana County, Pennsylvania, USA; died in 1938 in Pennsylvania, USA.
4. Orpha Nupp was born in 1904 in Indiana County, Pennsylvania, USA.
5. Alvin M. Nupp Knupp was born on 20 Jun 1905 in Indiana County, Pennsylvania, USA; died on 22 Oct 1995 in Akron, Summit County, Ohio, USA.
6. Wilda Nupp was born in 1908 in Indiana County, Pennsylvania, USA.
7. Ernest V. Nupp Knupp was born on 18 Apr 1910 in Indiana County, Pennsylvania, USA; died on 31 Jul 1989 in Warren, Macomb County, Michigan, USA.
8. Vincent B. Nupp was born in 1914 in Indiana County, Pennsylvania, USA; died in in Detroit, Wayne County, Michigan, USA.