 | This article relies largely or entirely on a single source. (July 2014) |
| Earldom of Mornington | |
|---|---|
 | |
| Creation date | 1760 |
| Created by | George II |
| Peerage | Peerage of Ireland |
| First holder | Garret Wesley, 1st Earl of Mornington |
| Present holder | Charles Wellesley, 9th Duke of Wellington |
| Heir apparent | Arthur Wellesley, Earl of Mornington |
| Remainder to | the 1st Earl's heirs male of the body lawfully begotten |
| Subsidiary titles | Viscount Wellesley of Dangan Castle, in the County of Meath |
| Status | Subsidiary title of the Duke of Wellington |
| Seat(s) | Stratfield Saye House |
| Former seat(s) | Dangan Castle |
Earl of Mornington is a title in the Peerage of Ireland. It was created in 1760 for the Anglo-Irish politician and composer Garret Wellesley, 2nd Baron Mornington. On the death of the fifth earl in 1863, it passed to the Duke of Wellington; since that date, the title has generally been used by courtesy for the heir apparent to the heir apparent to the dukedom.