Willoughby Bertie, 4th Earl of Abingdon (16 January 1740 – 26 September 1799), styled Lord Norreys from 1745 to 1760, was an English peer and music patron. Bertie was born in Gainsborough, Lincolnshire, the second eldest son of Willoughby Bertie, 3rd Earl of Abingdon and Anna Maria Collins. On 29 January 1759, he matriculated at Magdalen College, Oxford and received his MA on 29 May 1761. Bertie was a music patron and composer, as well as a political writer. His brother-in-law Giovanni Gallini brought him into contact with J.C. Bach and Carl Friedrich Abel, and he was subsequently very involved in their careers. During his time in England (1791–1792, 1794–1795), Abingdon was a patron of Haydn's, who may have encouraged him to compose. Abingdon is credited with the composition of one hundred and twenty musical works. Family life He and his family lived at Rycote in Oxfordshire and in 1769 he funded the construction of the Swinford Toll Bridge across the River Thames near Eynsham. Bertie bred the famous racehorse Potoooooooo, considered one of the finest racehorses of the 18th century. The unusual name came from instructions to his stable boy to write the horse's intended name, Potato, on its feed bin, and the boy instead wrote out "Pot" with eight o's. The joke greatly amused Bertie and he decided to make the name official. Abingdon earned himself the reputation of a political maverick. His obituary in the Gentleman's Magazine remarked that "his frequent speeches in the House of Peers were peculiarly eccentric". An outspoken critic of Lord North and his administration, he rigorously defended the liberties of the American colonies, yet denounced the French Revolution as a threat to "the Peace, the Order, the Subordination, the Happiness of the whole habitable Globe." He argued that the movement for the abolition of the slave trade was simply the result of a "new philosophy" inspired by the new French republic. When his elder brother James died in a fire at Rycote in 1745, Bertie became his father's heir, succeeding him as 4th Earl of Abingdon on 10 June 1760. In 1761, he sold the manor of West Lavington, Wiltshire to Robert Palmer and Thomas Walker, and in 1762, he sold the manor of Frilsham, Berkshire to George Amyand. He married Charlotte Warren, daughter of Admiral Sir Peter Warren, on 7 July 1768. Lady Abingdon died on 28 January 1794. They had