Jacobites
During the uprising Jacobites in 1715, William Boyd, 3rd Earl of Boyd, was an opponent of the restoration to the British throne of the house of Stuart and led a volunteer regiment Ayrshira. His son William, 4 Earl Boyd was, by contrast, devoted Jacobite, fought on the side of Charles Edward Stuart and was a member of the Privy Council of Young contender. One of his sons William, Charles Boyd, served in a cavalry regiment Jacobites as a captain.
In 1746 during the Battle of Culloden, William was captured - this was due to a fatal error count, which took the British equestrian team for the Sir Gina McDonnell, - and then was thrown into the Tower and 18 August the same year beheaded. Charles Boyd, who also took part in the battle, managed to survive and flee abroad. After the suppression of uprisings all titles clan were confiscated, but the second son of William James, in 1758, inherited through the maternal line the title of count and took the name of Errol Hay (William grandmother was Lady Margaret Hay - daughter of John Hay, 12 th Earl Erroll).