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
Edward Bligh, 5th Earl of Darnley 1818, a seat he held until 1830 for the Whig Party. In 1831 he succeeded his father in the earldom and took his seat in the House of Lords. He also served as Lord Lieutenant of County Meath between 1831 and 1835, and was elected a Fellow of the Royal Society in 1833. Lord Darnley married the Hon. Emma Jane, daughter of Henry Parnell, 1st Baron Congleton, in 1825. They had three sons and two daughters: Darnley died of lockjaw after an axe injury when felling timber on his estate at Cobham Hall, Kent, in February 1835, aged 39, and