following the revolutionary war, lenox became a successful merchant, government official, diplomat, and banker. in 1793 president george washington appointed lenox to be the second u.s. marshal for the district of pennsylvania where he was instrumental in suppressing the whiskey rebellion. after lenox left his position as marshal, he served as agent for the united states to the court of st. james's, during which he worked to exchange american sailors who were captured by the british and french. later, he distinguished himself in commerce, banking and finance, including as trustee of the girard bank and as president of the philadelphia bank. lenox died in 1828 and is buried near the house in old pine street church cemetery.