Arthur Chichester, 1st Marquess of Donegall

The Most Honourable The Marquess of Donegall
Portrait of Lord Donegall by Thomas Gainsborough, c. 1780
Member of Parliament for Malmesbury
In office 1768–1774 Serving with Thomas Howard
Preceded by	Thomas Conolly The Earl Tylney
Succeeded by	Charles Fox William Strahan
Personal details
Born	Arthur Chichester (1739-06-13)13 June 1739
Died	5 January 1799(1799-01-05) (aged 59)
Spouse(s)	Lady Anne Hamilton ​ ​ (m. 1761; died 1780)​ Charlotte Spencer Moore ​ ​ (m. 1788; died 1789)​ Barbara Godfrey ​ ​ (m. 1790; died 1799)​
Relations	Sir Richard Newdigate, 3rd Baronet (grandfather)
Children	7
Parent(s)	Hon. John Chichester Elizabeth Newdigate
Alma mater	Trinity College, Oxford

Arthur Chichester, 1st Marquess of Donegall (13 June 1739 – 5 January 1799), known as Arthur Chichester until 1757 and as The Earl of Donegall between 1757 and 1791, was an English nobleman and politician in Ireland.