Katherine Wellesley-Pole, Countess of Mornington

Katherine Wellesley-Pole, Countess of Mornington (23 January 1761 – 23 October 1851),[1] formerly Katherine Elizabeth Forbes, was the wife of William Wellesley-Pole, 3rd Earl of Mornington.

[2] Katherine was the daughter and co-heir of Admiral Hon.

The earl and countess had one son and three daughters: In 1789, Wesley-Pole changed the spelling of his surname to Wellesley-Pole, in keeping with the practice of other family members.

Following the earl's death in 1845, the earldom passed to their eldest son.

A watercolour portrait of the countess, by William Wood, was given by her to her daughter in 1844.