Gold ring found on Isle of Man was likely made to honor earl executed for treason in 1651
The crystal ring was probably made to honor James Stanley, 7th Earl of Derby Stanley's family ruled the Isle of Man for centuries, starting in the 1400s In the 1600s, mourning rings were given out as mementos when someone died The ring has a gold band and the initials 'JD' on it Stanley, who signed his letters 'J. Derby,' was a supporter of King Charles I He was beheaded by Cromwell's forces after Charles' defeat in the Civil War
Source: dailymail.co.uk