Winthrop was the youngest son of John S. Winthrop of New London, Conn. and Elizabeth Sheriffe Hay. He was a lineal descendant of governors John Winthrop of Massachusetts and John Winthrop the Younger of Connecticut, Chief JusticeWait Winthrop of Massachusetts, and John Winthrop FRS, his grandfather. His family evidently had Loyalist sympathies as he was entrusted to the care of a maternal uncle, attached to the British forces in New York, after the death of his father in 1778. This relative secured a place as a midshipman in the Royal Navy, where his education was completed. Winthrop married Sarah Farbrace on 23 December 1804 in Dover. He had two sons and four daughters with her.
Career
The first recorded mention of Winthrop as a midshipman is aboard admiral Rodney's flagship during the Battle of the Saintes on 12 April 1782. He was commissioned as a lieutenant in 1790 and in 1794 during the conquest of Martinique commanded a battalion of seamen attached to Prince Edward's brigade In the Spring of 1796 he commanded the sloop at the capture of St. Lucia. The same year he captured the French privateer Athenienne near Barbados. He then received command of HMS Undaunted, but was shipwrecked on the Morant Cays on 27 August 1796. Winthrop received a commission as a post-captain on 16 December 1796. He received command of the frigate HMS Circe in December 1797, and was stationed in the North Sea. On 14 May 1798 HMS Circe took part in the Expedition to Ostend. Winthrop superintended the landing of troops so successfully that he was rewarded with the honor of conveying Sir Home Popham's dispatch to London. In the Summer of 1799 Winthrop was put in charge of a squadron of frigates, comprising Jalouse,, Espiegle, and . On 27 June 1799 boats from these ships raided the Dutch island of Ameland, hoping to capture a number of Batavian gunboats. When this proved impossible, they cut out 12 Dutch merchantmen, lying in the roadstead, despite heavy fire from shore batteries. In August 1799 HMS Circe was part of the fleet that supported the Anglo-Russian invasion of Holland. Together with col. Maitland and lieutenant Collier, Winthrop was sent by admiral Mitchell as a parlimentaire to admiral Story commanding the Batavian squadron lying in the Texel roadstead. Due to sloppiness of the officers conducting the pilot boat in which they approached the Dutch fleet, the British parlimentaires were able to collect important information about the state of readiness and the morale of the crews. They also appear to have conspired with several Dutch officers to influence admiral Story and to foment a mutiny among the crew of the flagship Washington, which later brought about the surrender of the squadron without firing a shot. After the surrender Winthrop took possession of the Batavian ships on behalf of admiral Mitchell in what has become known as the Vlieter Incident In 1800 Winthrop received command of the frigate, which took part in the expedition against Ferrol, but was beached in Vigo Bay, after which she had to be destroyed by fire. On renewal of the war after the Treaty of Amiens captain Winthrop received command of the Ship of the line . With this ship he drove the French corvetteBayonnaiseon the beach in Finisterre Bay on 28 November 1803, after which the crew burned the ship. Around 1805 Winthrop was given command of the frigate HMS Sybille with which he captured the French privateer Oiseau in the English Channel on 3 May 1807.. In the Summer of 1807 Winthrop was put in charge of the Dover district of the Sea Fencibles On 12 August 1819 he attained the rank of Rear-Admiral of the White. In 1830 he was promoted to Vice-Admiral of the Blue. Winthrop died "of paralysis" on 10 May 1832 in Dover.
