Arthur Hill, 6th Marquess of Downshire

Arthur Wills John Wellington Trumbull Blundell Hill, 6th Marquess of Downshire (2 July 1871, London – 29 May 1918) was an Irish peer, styled Earl of Hillsborough until 31 March 1874. He lived chiefly at the family seat, Easthampstead Park, within 5,000 acres in Berkshire. The marquess also owned 115,000 acres in Hillsborough, County Down, and land in Wicklow and Kildare.

Marquess of Downshire in The Official Baronage of England, v. 2 (1886) Arthur Hill was son of Arthur Hill, 5th Marquess of Downshire (1844–1874), and Georgiana Elizabeth Balfour (died 12 January 1919), daughter of Colonel John Balfour of Balbirnie (1811–1895) and Lady Georgiana Isabel (Campbell) Balfour (died 3 December 1884). He became Marquess of Downshire in 1874 on the death of his father.

Throughout his life Arthur Hill was considered locally as somewhat eccentric but down-to-earth, occasionally dressing down to fit in with and follow the drovers from Easthampstead Park taking livestock to market. He had a keen interest in powered vehicles such as steam engines and motor cars, and was "chief of Wokingham's voluntary fire service"

Arthur Hill, 6th Marquess died at Easthampstead Park on 29 May 1918, and was buried there.