House of Hay
- Coat of Arms
-
House of Hay
Lords and Earls of Erroll
Lords Slains
Lords Hay of Erroll
Hereditary High Constables of Scotland
- Cadet Branches
-
House Hay of Boyne
Lords of Boyne -
House Hay of Broxmouth
Lords of Broxmouth -
House Hay of Yester
Lords of Yester and Locherworth
Lords Hay of Yester
Earls and Marquesses of Tweeddale -
House of Boyd-Hay
Earls of Erroll
Matrilineal branch issued from Mary Hay, 14th Countess of Erroll