As part of the circle around the prince, however, Gaveston also became entangled in conflicts between the King and his son. These difficulties first materialised in a dispute between treasurer Walter Langton and Prince Edward. The case enraged King Edward to the point where he banned his son from court, and banished several men from the prince's household. Though the two were reconciled at a later point, the King still prevented Gaveston from rejoining the prince. This matter was settled before 26 May 1306; the date when Gaveston was knighted, four days after the prince. Later that year Gaveston was once more in trouble, when he and twenty-one other knights deserted a Scottish campaign to attend a tournament. An arrest order was sent out for the deserters, but, at the insistence of Queen Margaret, they were all pardoned in January 1307.