The early history of Scotland is confused and often obscure, due largely to information given by the sources of the time and after, which are often contradictory, vague, and lacking in detail.
Alexander's heir was his infant granddaughter, Margaret, "the Maid of Norway", of the House of Fairhair; but she died, still unmarried and childless, in late 1290 before reaching Scotland, and was never crowned at Scone.
In 1306, Robert the Bruce and his wife, Elizabeth de Burgh, were crowned King and Queen of Scots at Scone, ending the Scottish interregnum.
In this he was wrong: Mary would marry a member of a junior branch of the Stewart family, and the line they founded would rule not only Scotland but also England and Ireland until 1714.
James VII's son, James Francis Edward Stuart, refusing to accept the Act of Union, claimed the English and Scottish thrones, as did his son Charles Edward Stuart; however, they are not considered legitimate Kings of Scotland, since they never effectively secured their claims, and so their wives are not listed here.