BEATTY, John, physician, born in Bucks County, Pennsylvania, 19 December 1749; died in Trenton, New Jersey, 30 April 1826. He was a son of Charles Beatty, was graduated at Princeton in 1769, studied medicine with the celebrated Dr. Rush, of Philadelphia, joined the army early in the war for independence, and in September 1776, held the rank of Lieutenant-Colonel in the Pennsylvania contingent. He was taken prisoner by the British at the capture of Fort Washington, New York, 17 November 1776, and during his confinement suffered greatly in health, owing to harsh treatment. Having been exchanged early in 1778, he was appointed, 28 May commissary-general of prisoners, with the rank of colonel, On 31 March 1780, he resigned and settled as a physician at Princeton, New Jersey He was a delegate to the continental congress m 1783-'5, served in both branches of the state legislature, was a delegate to the constitutional convention, and a member of congress in 1793-'5. From 1795 till 1805 he was secretary of state for New Jersey, and he was president of the Trenton bank in 1815-'26.