When Phineas Allen was born on 6 April 1745, in Lincoln, Lincoln, Middlesex, Massachusetts, United States, his father, Benjamin Allen Sr, was 35 and his mother, Eunice Gale, was 33. He married Abigail Foster on 6 March 1769. He lived in Lincoln, Middlesex, Massachusetts Bay Colony, British Colonial America in 1745. His occupation is listed as proprietor of black horse tavern in Massachusetts Bay Colony, British Colonial America. He died on 15 May 1830, in Lincoln, Middlesex, Massachusetts, United States, at the age of 85, and was buried in Sherburne, Chenango, New York, United States.