William Pole-Tylney-Long-Wellesley, 4th Earl of Mornington (22 June 1788 – 1 July 1857) was an Anglo-Irish nobleman notorious for his dissipated lifestyle.
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Ancestry
One of his great-grandfathers was Henry Colley (d.1719) (or Cowley) of Castle Carbery, King's County, Ireland. That family from Rutland, England settled in Ireland tempore Henry VIII, where they were distinguished soldiers and administrators. Henry's sister Elizabeth married Garret (or Gerald) Wesley I of Dangan, Meath, younger son of Valerian Wesley and Ann Cusack (see legacy below). Henry's youngest son by Mary Usher, only daughter of Sir William Usher of Dublin, was Richard Colley (d.1758) who in 1728, on the death without issue of his first cousin Garret Wesley II inherited the Wesley estates with the proviso in the will that he and his heirs should adopt the name and arms of Wesley. He made the necessary formal declaration in 1728 and became known as Richard Wesley. In 1746 he was created 1st Baron Mornington, an ancient barony of the Wesleys. His sister Ann married William Pole of Ballyfin, Queen's County. Mornington married Elizabeth Sale, producing as heir Garret Wesley, 2nd Baron Mornington, who was created in 1760 1st Earl of Mornington in County Meath. In 1759 he married Ann Hill and produced five successful sons; of these, the most prominent are:
firstly Richard Wesley later Governor General of India and was created 1st Marquess Wellesley




