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
Arthur Wellesley, 1st Duke of Wellington Wellesley suffered a minor injury to his knee from a spent musket-ball. Although they would re-attack successfully the next day, after time to scout ahead the enemy's positions, the affair affected Wellesley. He resolved "never to attack an enemy who is preparing and strongly posted, and whose posts have not been reconnoitered by daylight". Lewin Bentham Bowring gives this alternative account: A few weeks later, after extensive artillery bombardment, a breach was opened in the main walls of the fortress of Seringapatam. An attack led by Major-General Baird secured the fortress. Wellesley secured the rear of the advance, posting guards