Adam Murimuth Continuation. 25 Feb 1308 ... both he and the queen were crowned by the Bishop of Winchester, Henry, by the commission of Lord Robert, Archbishop of Canterbury. And present at the said coronation were Charles (age 13), the brother of the queen (age 13), who later became King of France, Duke of Brittany, Henry (age 33), Count of Luxembourg, who later became Emperor, and Peter de Gavestone (age 24), who nobly appeared, surpassing all, incurred the envy and hatred of all. Also, Louis (age 31), the brother of the King of France (age 39), was there.

... tam ipse quam ipsa regina fuerunt coronati per episcopum Wyntoniensem Henricum, ex commissione domini Roberti archiepiscopi Cantuariensis. Et dicte coronationi interfuerunt Karolus, frater regine, qui postea fuit rex Francie, dux Britanniæ, Henricus comes Luceburgiæ, qui postea fuit imperator, et Petrus de Gavestone, qui nobiliter apparuit omnes transcendens, invidiam et odium omnium incurrebat. Item, Lodowycus, frater regis Francis, fuit ibidem