In the 1290s, John Comyn, Earl of Buchan, had a licence from Edward I of England, reigned 1272-1307) to dig for lead in the Calf of Man (off the coast of the Isle of Man), to cover eight towers of the Cruggleton Castle / Crogiltoun Castle in Wigtownshire.
On 28 August 1296 the Ragman Rolls for Wigtownshire had been compiled at Berwick-on-Tweed, which time and place King Edward I of England also convened a Parliament of those Scottish nobles summoned by him to attend at the border city.