Frank married Mary E Wilson in 1876. Mary (daughter of Ashabald M. Mapes and Alamenda Martha Vineing) was born on 4 Jul 1856 in Ohio, USA; died in 1926. [Group Sheet] [Family Chart]

1. Frank Clapper, Jr.
2. Florence Clapper was born in May 1880 in Elk Creek, Republic, Kansas, USA.
3. Charles Jacob Clapper was born on 3 Mar 1883 in Red Cloud, Webster, Nebraska, USA; died on 7 Jul 1941 in Echo, Umatilla, Oregon, USA.
4. John Dudley Clapper was born on 8 Nov 1884 in Blaine County, Nebraska, USA.