This person, who was made the first Earl of (*) Cornwall, violated the Ordinances of  1311 by returning from exile and was beheaded by a group of magnates led by Thomas, the Second Earl of Lancaster and Guy de  Beauchamp, Earl of Warwick.
This person gave members of the nobility nicknames like "the dog," "the churl," "Joseph the Jew," and "Whore-son"  upon return from serving as Lieutenant of Ireland. This target of part of the Bologne Agreement was threatened  excommunication by Robert Winchelsey. This person ruled as regent in the absence of a monarch who married the so-  called "She-Wolf of France." This person was a member of the household of the Prince of Carnarvon, who later became  king and exiled this person three times. This person, who was made the first Earl of (*) Cornwall, violated the Ordinances of  1311 by returning from exile and was beheaded by a group of magnates led by Thomas, the Second Earl of Lancaster and Guy de  Beauchamp, Earl of Warwick. For 10 points, name this noble of Gascon extraction who was a favorite of Edward I and, like the  younger Hugh Despenser, was the alleged homosexual lover of Edward II.
This person gave members of the nobility nicknames like "the dog," "the churl," "Joseph the Jew," and "Whore-son"  upon return from serving as Lieutenant of Ireland.
Piers Gaveston [accept either; prompt on 1st Earl of Cornwall]