He was born on August 24, 1938 in Elgin to Lloyd and Esther (Rebhorn) Leffelman.  He married Hazel Underwood on June 2, 1962 in Genoa.

Gordon was a veteran of the U.S. Navy, serving from 1957-1960.  He worked for the United States Postal Service for 20 years and later owned and operated Gordie's Place in Kingston for over 18 years.

He was a member of the Genoa VFW, the 40/8 club, the Moose Lodge and a Boy Scout Leader and Scout Master.

Survivors include his 3 children, William (Denise) Leffelman, Judy (Barrie) Greenwell and Peggy (Johnny) Heath; 11 grandchildren, Jacob Leffelman, Sean (Autumn) Taylor, Sr., Bobbie (Matt) Viktora, Janice Beckman, Jazmin Greenwell, Killian (Morgan) Greenwell, Paige Greenwell, Kristen (Adam) Habbley, Danielle Heath, Andrew Heath and Josh Heath; 23 great grandchildren; his brother, Delbert (Joyce) Leffelman, sister-in-law, Pat Leffelman; and numerous nieces and nephews.

He was preceded in death by his parents; his wife, Hazel; and 2 brothers, Lowell and Art Leffelman.

A graveside service will be held on Friday, October 27th at 11:00 AM at the Kingston Cemetery with full military rites.  An open house will follow from 1:00-4:00 PM at the Kingston Park.

In lieu of flowers, memorials can be made to the Kingston Auxiliary- Post 1010 in care of the Slater-Butala Funeral Home, 132 W. Main St., Genoa, IL. 60135.