Diana Denyse Hay, 23rd Countess of Erroll (5 January 1926 – 16 May 1978) was a British peeress suo jure.[1]
Diana was only child of Josslyn Hay, 22nd Earl of Erroll and his first wife, Idina Sackville. When her father was murdered in 1941, she inherited the earldom of Erroll and the lordship of Hay, while the barony of Kilmarnock had passed to her uncle, Gilbert Boyd, 6th Baron Kilmarnock.
On 19 December 1946 at St Margaret's, Westminster, Lady Erroll married Iain Moncreiffe of that Ilk.[1] She and her husband both held titles in their own right. They had three children:
After the passing of the Peerage Act 1963 which allowed suo jure peeresses to take a seat in the House of Lords, Lady Erroll did so, with eleven other peeresses. Moncreiffe and Lady Erroll were divorced in 1964 and on 27 November that year, she married, in Lonmay, Major Raymond Carnegie (born 9 July 1920, a grandson of Charles Carnegie, 7th Earl of Southesk) and they had one son, the Hon. Jocelyn Jacek Alexander Bannerman Carnegie (b. 21 November 1966), who married Susan Mhairie Butler in 1990; the couple had six children.
Diana, Lady Erroll, died in 1978, aged 52. Her titles passed to her eldest son, Merlin. The cause of death has never been publicly disclosed.
| Peerage of Scotland | ||
|---|---|---|
| Preceded by Josslyn Hay |
Countess of Erroll 1941–1978 |
Succeeded by Merlin Hay |