Fascinating stuff! By coincidence, we were in Cockenzie yesterday, including visiting the historic Cockenzie House, which was occupied by John Cope and his soldiers in the lead-up to the Battle of Prestonpans in 1745.
Cockenzie House
There is mention of the Earl of WINTON (not Wigton) in the script in this link: Winton is anther place in East Lothian, not too far away.

And also my grandparents on my mother's side were called Morren, so should trace the family tree back a bit further!