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
Wellesley High School girls ice hockey team won the state championship. In 2006, the Wellesley High School boys lacrosse team won the Division I All State Championships Varsity Sports in Wellesley for the 2014–2015 academic school year are as follows: Wellesley High School is widely known for their performing arts department, which has reached state and national levels on a consistent basis. Some of the most notable works by the Wellesley High School performing arts department include the Keynote and Rice Street singers (Conducted by Dr. Kevin McDonald) involvements with the Boston Pops, as well as the band and orchestra programs (Conducted by