Leslie Munce was born in Kent Co., DE on 14 January 1868. He was the son of Isaiah Zaddock Munce and Elmia Carty .

Sometime before 1888 he married Margaret Seeney who was born in September 1867.

Leslie and Margaret had the following children:

• Nelson Munce ( July 1888- )
  
• Clarence Munce (Sept. 1889- )
  
• John M. Munce (June 1896- )
  
• Parker Munce
  
• Kenneth Munce, married Margaret Pierce