Isabella Susan Percy, Countess of Beverley (19 December 1750 – 24 January 1812), formerly Isabella Susan (or Susannah) Burrell, was the wife of Algernon Percy, 1st Earl of Beverley, and the mother of the 5th Duke of Northumberland.
[1] Isabella was the second daughter of Peter Burrell, a barrister, of Beckenham, Kent, and his wife, the former Elizabeth Lewis.
Isabella married the future earl on 8 June 1775, by special licence, at Syon House in London.
[1] The countess died in 1812, aged 61, and was buried in the Northumberland Vault at Westminster Abbey.
[10] The Earl of Beverley died in October 1830, aged 80, and was succeeded by his eldest son, George, who later inherited the dukedom of Northumberland from his cousin, the 4th Duke, in 1865.