Earl of Mornington used as a courtesy title by the heir apparent to the Marquess of Douro, himself the heir apparent to the Duke of Wellington. As of 2015 the title is held by courtesy by Arthur Wellesley, Earl of Mornington, son of Arthur Wellesley, Marquess of Douro and grandson of Charles Wellesley, 9th Duke of Wellington. The Wesley or Wellesley family descended from Sir Richard de Wellesley (15th century). His grandson Sir William Wellesley (died 1602) lived at Dangan Castle, County Meath. The family estates passed down the male lines. One of Wellesley's daughters, Alison, married John Cusack. Their son Sir Thomas
Douglas Wellesley Morrell Douglas Wellesley Morrell Douglas Wellesley Morrell , (6 February 1917 – 6 February 1996) was an English electrical engineer and deputy managing director of Racal. Douglas Morrell was born in Plymouth on 6 February 1917, but was adopted and baptised nearly a year later, on 9 January 1918, as Douglas Wellesley Morrell at Emmanuel, Compton Gifford, Plymouth, Devon. His father, Arthur Wellesley Morrell, was a paymaster for the Royal Navy at the Plymouth Dockyard. Douglas Morrell was educated at Dauntsey's School in Wiltshire, and later at Faraday House in London, where he earned a bachelor of science (engineering) with honours,