(1779-1859)

Tommy was eight years old when the family moved into the Walnut Street house. He began his schooling at home but later attended the Episcopal Academy, begun by his father Bishop White. His mother wrote of him in a letter that "Tommy is also doing very well and an exceedingly good child".

When he was 25 years old in 1804, he married Maria Key Heath of Maryland. They had five children, all born at the Walnut Street home. In 1814, Maria died and Thomas moved out of his father's house with all of his children. In 1822, he moved back home due to his father's ill health and moved his bed into his father's room to care for the elderly Bishop.

While living at his father's house, he acted like a stepfather to his five nieces and nephews as well as caring for his own growing children. He attended the University of Pennsylvania and later worked for a large merchant firm owned by his uncle, Robert Morris. He made several voyages acting as "supercargo" (caretaker for the cargo) shipped by his uncle. He even went all the way to China on one trip. Later, he became a wine merchant and may have stored his product in the basement of the Walnut Street house. Like his father he was a religious man and was a vestryman at Christ's Church.