I descend from West Leopard and wife Mary Posey, and their daughter Malinda who married David Ballew on 1 Oct 1835 in Macon Co., NC.
In October 1996 my cousin Keith R. Ballew emailed me this extract from Probate Records of South Carolina, Vol. 1, Index of Inventories, Newberry Co., SC, Minutes of the County Court, 1785-1798, Book Page 248, Archive Page 629, May Term 1795:
"Charles Leopard, aged 15 years, and West Leopard, age 13 years, minors of Thomas Leopard, dec'd, came into court and by consent of the same, Charles Leopard chose Wm. Gary, and West Leopard chose John Leopard as their guardians, ordered the said guardians appear in the clerk's office within 10 days in order to enter into bond for the sum of 50 pounds each for their faithful guardianship to said minors estate."
Probably this explains Charles Leperd being mentioned in William Gary's will. It's possible that John, West's guardian, was the John E. Leopard who married Elcy Gary. I need to dig further into Gary/Leopard connections.