On July 29, 1819, the University of Pennsylvania conferred on Milnor the degree of Doctor of Divinity.
After his time in Congress, he studied theology and was ordained as a minister of the Protestant Episcopal Church.
[3][4] Among his parishioners was Mary Simpson, an African-American grocer who lived on John Street.
In 1798, Milnor had been an officer of Pennsylvania Society, which at the time, was waging a movement to abolish slavery.
General references Inline citations Biographical note alongside: Adam Seybert and William Anderson