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
Henry Stuart, Lord Darnley of a different Scottish town. Not long after that, both Mary and Bothwell were charged with Henry's murder. They were given separate trials in England. Bothwell was found not guilty. Mary's trial took longer, ending with no definitive finding. Mary was kept in captivity until she was implicated in the Babington plot against Elizabeth, after which she was convicted of treason and executed. Darnley was buried in the Royal Vault, Abbey Church, Holyrood in 1567 alongside the bodies of several royals: King David II, King James II, Arthur, Duke of Rothesay, Madeleine of Valois, James, Duke of Rothesay, Arthur, Duke