Descended from a group of powerful Norman princes who went by the name of de La Haye, the Hay family first came to the British Isles with William the Conqueror in 1066.
The family would eventually settle in Scotland and the lands of Errol in Perthshire would be given to William de Haya in 1178 with their status in Scotland being secured at the beginning of the 13th century following a close relationship between the Sir Gilbert Haye and the Scottish warrior King, Robert the Bruce, during the Scottish War of Independence.
This status allowed the Hay to rise to the role of constable in 1309, a dignity which is still enjoyed by the present chief and one that gives the holder precedence in Scotland before every other hereditary honour other than the royal family itself.
While now a ceremonial role, the Lord High Constable was once responsible for the personal safety of the monarch and was the sword-bearer at coronations.
Today, the current clan chief is Merlin Hay, 24th Earl of Erroll.