The Earl of Donegall is a title in the peerage of Ireland, created in 1791. The title is associated with the Donegall family, which has historical ties to the region of Ulster. The family has played a significant role in Irish history, particularly in the development of the city of Belfast. The current holder of the title is the Marquess of Donegall, who is a descendant of the original earl. The title has been passed down through generations, and the family has maintained a presence in both Irish and British aristocracy. The Earl of Donegall is part of the broader context of the British peerage system.