Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
SUMPTER
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
A teamster or groom who drives beasts of burden. A "sumpter-horse," a horse which carries necessaries for a journey.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English