Background
He was descended from Sir William Cavendish, an ancestor shared with the Dukes of Devonshire.
He was descended from Sir William Cavendish, an ancestor shared with the Dukes of Devonshire.
Cavendish studied at University College, Oxford, matriculating on 17 August 1724.
Cavendish was the son William Cavendish and Mary Tyrell. He held the office of High Sheriff of Derbyshire in 1741. He was responsible for the construction of Doveridge Hall, in Doveridge, Derbyshire.
He subsequently moved to Ireland, where he became Teller of the Exchequer in the Irish government and Collector for Cork in 1743.
He became Commissioner of Revenue in Ireland in 1747. Cavendish was created a baronet on 7 May 1755, of Doveridge in the County of Derby, in the Baronetage of Great Britain.
Cavendish married firstly Anne Pyne, the daughter of Henry Pyne and Anne Edgecumbe, on 9 January 1730. Together they had six children.
He was elected to the Irish House of Commons as the Member of Parliament for Lismore in 1761, serving until 1768. He was invested as a member of the Privy Council of Ireland on 9 June 1768.