The earldom was created in 1876 for
Edward Montagu-Stuart-Wortley-Mackenzie, 3rd Baron Wharncliffe. He was a descendant of
Edward Wortley Montagu (grandson of
Edward Montagu, 1st Earl of Sandwich), and his wife, the author
Lady Mary Wortley Montagu. Their daughter
Mary married the future Prime Minister
John Stuart, 3rd Earl of Bute. Their second son,
James Stuart, succeeded to the Wortley estates in Yorkshire and Cornwall through his mother and assumed the additional surname of Wortley, becoming James Stuart-Wortley. In 1803, he also inherited the Scottish estates of his uncle
James Stuart-Mackenzie and assumed the additional surname of Mackenzie. His second son,
James Stuart-Wortley, was a soldier and prominent
Tory politician. In 1826, he was raised to the Peerage of the United Kingdom as Baron Wharncliffe, of
Wortley in the
County of York. The first baron was succeeded by his eldest son, John. He represented
Bossiney,
Perth, and the
West Riding of Yorkshire in the
House of Commons. On his death, the peerage passed to his eldest son, Edward, the third Baron. He was Chairman of the
Manchester, Sheffield and Lincolnshire Railway, which under his leadership became the
Great Central Railway. 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. Francis Dudley Stuart-Wortley-Mackenzie (1829–1893). These titles are all in the Peerage of the United Kingdom. In 1880, Lord Wharncliffe assumed the additional surname of Montagu. 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. Francis Dudley Stuart-Wortley-Mackenzie. This line of the family failed on the death of his grandson, the fourth Earl, in 1987. He was succeeded by a second cousin once removed, the fifth and present Earl, Richard Alan Montagu-Stuart-Wortley, of Portland, Maine, the elder son of Alan Ralph Montagu-Stuart-Wortley, only son of Ralph Montagu-Stuart-Wortley, only son of the Hon. Ralph Granville Montagu-Stuart-Wortley, younger brother of the second Earl. ==Other notable family members==