Earl of Wharncliffe, in the West Riding of the County of York, is a title in the Peerage of the United Kingdom.

Their daughter Mary married the future Prime Minister John Stuart, 3rd Earl of Bute.

In 1803, he also inherited the Scottish estates of his uncle James Stuart-Mackenzie and assumed the additional surname of Mackenzie.

In 1826, he was raised to the Peerage of the United Kingdom as Baron Wharncliffe, of Wortley in the County of York.

In 1876 he was created Viscount Carlton, of Carlton in the West Riding of the County of York, and Earl of Wharncliffe, in the West Riding of the County of York, with remainder to his younger brother the Hon.

He was succeeded in the viscountcy and earldom, by virtue of the special remainder, by his nephew Francis, the second Earl, the eldest son of the Hon.

John Stuart-Wortley, younger brother of the first Baron, sat as Member of Parliament for Bossiney.

He commented “I am just an ordinary guy.”[4] The estate was ultimately inherited by Lady Rowena Wortley-Hunt, only surviving child of the fourth earl, who took it over on her mother’s death in 2001.

[5] The heir apparent to the peerages is the present holder's eldest son, Reed Montagu Stuart Wortley, Viscount Carlton (born 1980).