Duke of Wellington (title)

Duke of Wellington is a title in the Peerage of the United Kingdom. It was created in 1814 for Arthur Wellesley, 1st Marquess of Wellington (1769–1852), the Anglo-Irish military commander who is best known for defeating Napoleon at the Battle of Waterloo and serving twice as Prime Minister. In historical texts, unqualified use of the title typically refers to the 1st Duke. The title derives from Wellington in Somerset.

The first Duke's father, Garret Wesley, had been granted the title of Earl of Mornington in 1760. His male-line ancestors were wealthy agricultural and urban landowners in both countries, among the Anglo-Irish Protestant Ascendancy. The dukedom has descended to heirs male of the body, along with eleven other .

Five Dukes have been created Knights of the Garter, the most senior Britishorder of knighthood.