Ladies and gentlemen over 18 are eligible for membership if they can prove beyond doubt their descent from a Monarch of Scotland. The first eligible Monarch is Kenneth MacAlpin, and the last is James VI of Scotland, who the last Monarch to hold only the title of King of Scotland for a significant period of time, before he later became James I of England. For this Order, later Monarchs who held multiple crowns, or were Monarchs of Great Britain or the United Kingdom do not qualify.