Mercantile career Following graduation, he returned to Albany to undergo a mercantile apprenticeship under his father. Through his father's influence, he obtained clerkships in Albany's municipal government. He purchased a stone
townhouse on
Duke Street,
Manhattan, a forty-acre estate in
Brooklyn Heights and personally owned several slaves, one of whom
ran away in November 1752; Livingston published advertisements in several city newspapers, including the
New-York Mercury and
New-York Gazette, offering a reward for his recapture. He also served as an
alderman of the
East Ward from 1754 to 1762. In 1756 he was president and founding member of the
St. Andrew's Society, New York's first benevolent organization, and he founded New York City's
first chamber of commerce in 1768. His brother William, a prominent lawyer in New Jersey, was also a delegate to the Continental Congress from 1774 to June 1776. In July 1775, Philip signed the
Olive Branch Petition, a final attempt to achieve an understanding with the Crown. When the British occupied New York City, Philip and his family fled to
Kingston, New York, where he maintained another residence. Livingston suffered from
dropsy, and his health deteriorated in 1778. ==Personal life==