- John K. Alexander
Mifflin, Thomas (10 January 1744–20 January 1800), merchant, soldier, and politician, was born in Philadelphia, the son of John Mifflin and Elizabeth Bagnell, Quakers. His father, a wealthy merchant, held numerous significant political posts including that of provincial councilor. Thomas graduated from the College of Philadelphia in 1760 and then spent four years learning the merchant trade with William Coleman. After visiting England and France during 1764 and 1765, Mifflin formed a mercantile partnership with his brother George and in March 1767 married Sarah Morris, a cousin. The couple quickly took a prominent place in Philadelphia’s elite social circle. Contemporaries described Mifflin as an affable gentleman and fine sportsman. Elected to membership in the American Philosophical Society in 1768, he actively participated in that organization thereafter....