On this day in Tudor history, 12th September 1573, Archibald Campbell, 5th Earl of Argyll, died suddenly at Barbreck.
Argyll was a Protestant reformer, and leading politician in the reign of Mary, Queen of Scots, and he'd got married just six weeks earlier.
On the night he died, he showed no signs of illness before retiring to bed, so his death was very sudden.
Argyll was the third most important noble in Scotland, the most important highland chief, and a founder of the Lords of the Congregation. He went from opposing Mary, Queen of Scots, to leading her troops in battle.
Find out all about Argyll's interesting life and career...