Baron Middleton, of Middleton in the County of Warwick, is a title in the Peerage of Great Britain, created in December 1711 for Sir Thomas Willoughby, 2nd Baronet, who had previously represented Nottinghamshire and Newark in Parliament. It was one of twelve new peerages created together and known as Harley's Dozen, to give a Tory majority in the House of Lords.

The Willoughby baronetcy, of Wollaton in the County of Nottingham, had been created in the Baronetage of England in 1677, for the first baron's elder brother Francis Willoughby, who at the time was aged only about nine, with special remainder to him, the first baronet's only brother, and he duly succeeded him when his brother died at the age of twenty in 1688. Their father, the landowner and naturalist Francis Willughby (1635–1672), of Middleton Hall, Warwickshire, had died when they were both small children.

The first Lord Middleton was followed by his eldest son, the second Baron (1692–1758), who had previously sat as one of the Members of Parliament for Nottinghamshire and Tamworth. He was succeeded by his son, the third baron, who died unmarried, and then by a younger son, the fourth Baron. The direct line then failed, and Henry Willoughby, 5th Baron Middleton (1726–1800), was the son of the Hon. Thomas Willoughby (c. 1694–1742), second son of the first Baron. On the death of his son, the sixth Baron (1761–1835), this line also failed.

Digby Willoughby, 7th Baron Middleton (1769–1856), a captain in the Royal Navy, was a grandson of the second son of the first Baron. He died unmarried and was succeeded by his cousin once removed, the eighth Baron, the grandson of Reverend the Hon. James Willoughby, younger son of Thomas Willoughby, second son of the first Baron. He was succeeded by his eldest son, the ninth Baron, who in his turn was succeeded by his younger brother, the 10th Baron. On the latter's death, the titles passed to his second but eldest surviving son, the 11th Baron. He was Lord Lieutenant of the East Riding of Yorkshire. Since 2011, the titles are held by his grandson, the 13th Baron.

Extensive estate and personal papers of the Willoughby family are held in the Middleton collection at the department of Manuscripts and Special Collections, University of Nottingham. They include the Wollaton Antiphonal.

The current family seat is Birdsall House, near Malton, North Yorkshire. The Middleton family owned Wollaton Hall, a stately home near Nottingham on which Mentmore Towers was based, and Middleton Hall in Warwickshire until they were sold by the 11th Baron in the 1920s.

Middleton baronets, of Wollaton (1677)

Barons Middleton (1711)

The heir apparent is the present holder's eldest son, the Hon. James William Michael Willoughby (b. 1976). The heir apparent's heir, and next in line, is his elder son, Thomas Michael Jonathan Willoughby (b. 2007).

Title succession chart

Francis Willughby 1635–1672
Willoughby baronetcyBaron Middleton
Francis Willoughby 1st Baronet 1668–1688Thomas Willoughby 1st Baron Middleton 2nd Baronet 1670–1729
Francis Willoughby 2nd Baron Middleton 1692–1758Hon. Thomas Willoughby 1694–1742
Francis Willoughby 3rd Baron Middleton 1726–1774Thomas Willoughby 4th Baron Middleton 1728–1781Thomas Willoughby 1726–1748Henry Willoughby 5th Baron Middleton 1726–1800Francis Willoughby 1727–?Rothwell Willoughby 1729–1764Rev. Hon. James Willoughby 1731–1816
Henry Willoughby 6th Baron Middleton 1761–1835Digby Willoughby 7th Baron Middleton 1769–1856Francis Willoughby 1771 – b. 1856Henry Willoughby 1780–1849
Henry Willoughby 8th Baron Middleton 1817–1877
Digby Willoughby 9th Baron Middleton 1844–1922Ernest Willoughby 10th Baron Middleton 1847–1924
Cdr. Henry Willoughby 1882–1916Michael Willoughby 11th Baron Middleton 1887–1970
Michael Willoughby 12th Baron Middleton 1921–2011
Michael Willoughby 13th Baron Middleton 14th Baronet born 1948
Hon. James Willoughby born 1976

Line of succession

Line of succession
Thomas Willoughby, 1st Baron Middleton (1670–1729) Francis Willoughby, 2nd Baron Middleton (1692–1758) Francis Willoughby, 3rd Baron Middleton (1726–1774) Thomas Willoughby, 4th Baron Middleton (1728–1781) Hon. Thomas Willoughby (1694–1742) Henry Willoughby, 5th Baron Middleton (1726–1800) Henry Willoughby, 6th Baron Middleton (1761–1835) Francis Willoughby (1727–?) Digby Willoughby, 7th Baron Middleton (1769–1856) Rev. Hon. James Willoughby (1731–1816) Henry Willoughby (1780–1849) Henry Willoughby, 8th Baron Middleton (1817–1877) Digby Willoughby, 9th Baron Middleton (1844–1922) Ernest Willoughby, 10th Baron Middleton (1847–1924) Michael Willoughby, 11th Baron Middleton (1887–1970) Michael Willoughby, 12th Baron Middleton (1921–2011) Michael Willoughby, 13th Baron Middleton (b. 1948) (1) Hon. James Willoughby (b. 1976) (2) Thomas Willoughby (b. 2007) (3) Rupert Willoughby (b. 2011) (4) Hon. Charles Willoughby (b. 1986) (5) Hon. John Willoughby (b. 1951) (6) Hon. Thomas Willoughby (b. 1955) Brigadier Hon. Henry Willoughby (1932–2009) (7) Guy Willoughby (b. 1960) (8) James Willoughby (b. 1999) Rev. Hon. Charles Willoughby (1822–1875) James Willoughby (1856–1947) Commander Ronald Willoughby (1884–1971) (9) Christopher Willoughby (b. 1938) Rev. Bernard Willoughby (1896–1997) (10) Colin Willoughby (b. 1949) (11) Philip Willoughby (1993) Rev. Hon. Percival Willoughby (1827–1913) Colonel Herbert Willoughby (1853–1913) (12) Major John Willoughby (b. 1942) (13) John Willoughby (b. 1967) Rev. Nesbit Willoughby (1854–1919) Lawrence Willoughby (1908–1980) (14) Guy Willoughby (b. 1958)

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