Elizabeth Hay, Countess of Erroll

Elizabeth Hay, Countess of Erroll (17 January 1801 – 16 January 1856), an illegitimate daughter of William IV and Dorothy Jordan, married William Hay on 4 December, 1820, at the age of 19. Hay was born with the name Lady Elizabeth FitzClarence.
She married her husband at St George's, Hanover Square, an Anglican church in Westminister.
She is shown in a Fitzclarence portrait in House of Dun, and she kept a stone thrown at her father William IV and the gloves he wore on opening his first Parliament as keepsakes.
She died on 16 January 1856 in Edinburgh, Scotland, aged 54.
Children and Relatives.
With her husband she had four children:
She is also the grandmother of Princess Louise's husband, the Duke of Fife.
David Cameron is related to Elizabeth Hay through William IV, which makes him the fifth cousin, twice removed to the Queen.