Early in 1217 the Earl Marshal wrote in the young King’s name to Reginald de Breuse, urging him to return to his allegiance and promising that if he did so, the whole of his patrimony should be restored to him.[443] Reginald however continued obstinate till the Royalist victory at Lincoln. Then he, like many others, seems to have realized that the tide had turned, and that it was time for him to turn likewise. Before Midsummer he had submitted, and he was soon reinstated in the Irish and English possessions of his father.[444] His Welsh kinsfolk promptly punished his desertion of their party; Rhys and Owen wrested from him “the whole of Builth except the castles”; Llywelyn marched upon Brecknock. Reginald however succeeded in patching up some kind of peace with his father-in-law, who thereupon turned his arms against the Flemings of Pembrokeshire, and compelled {Sept.} them all to promise him tribute and submission.[445] [Sidenote: 1217] To Llywelyn, as to King Alexander, the treaty of Kingston was duly notified by Louis.[446] The new Bishop of Hereford and the Bishop of Coventry were, it seems, empowered by the Legate to receive the submission of all the Welsh princes and absolve them from excommunication at Hereford on 18th November; when this was done, Hugh de Mortimer[447] and some other barons were to escort them to Northampton for a meeting with the King.[448] Henry and the Marshal were at Northampton on 17th and 18th December;[449] but evidently the Welsh princes did not come. It may have been to keep guard on the Welsh border that the Marshal took his young sovereign to keep Christmas at Gloucester,[450] and lingered with him in the west of England throughout the first four months of the new year {1218}. In February, 1218, a safe-conduct was issued to Llywelyn that he might come and do homage to the King at Worcester.[451] No date is fixed in the letter, and no record of the homage appears to exist; but there can be no doubt that it was performed at the appointed place on or before 17th March, for on that day, at Worcester, the castles of Cardigan and Caermarthen with the lands appertaining to them were committed by the King and his council to his “beloved brother-in-law Llywelyn, Prince of North Wales,” that he might hold them till the King’s coming of age, maintaining them out of their own revenues, and administering justice within their territories in the King’s name.[452] [Sidenote: 1218]