Henry Stuart, Lord Darnley not together in early 1545 and a letter of March 1566, from Mary Queen of Scots, indicates Darnley was then nineteen years old. Therefore the date 1546 would seem probable. A descendant of both James II of Scotland and Henry VII of England, Henry Stuart, Lord Darnley, was heir to two royal houses, the House of Stuart and the House of Tudor, thus he had claim to both the Scottish and English thrones, a claim that may have cost him his life. In 1545, his father, Matthew Stewart, 4th Earl of Lennox was found guilty of treason in Scotland for
Stewart of Darnley of the House of Stewart of Darnley were styled Earls of Lennox by the English Crown, although the King of Scots, in whose Kingdom the Earldom of Lennox lay, did not recognize their title. In 1544 Matthew Stewart, 4th Earl of Lennox married Margaret Douglas, the granddaughter of Henry VII. Their sons Henry Stuart, Lord Darnley and Charles Stuart, 1st Earl of Lennox, were held by contemporaries to have a credible claim to the throne of England. Margaret Douglas was the fruit of the 1514 union of Margaret Tudor, Dowager Queen of Scots and elder daughter of Henry VII with