 In 1238, Llywelyn held a council at Strata Florida Abbey where the other Welsh princes swore fealty to Dafydd.Llywelyn's original intention had been that they should do homage to Dafydd, but the king wrote to the other rulers forbidding them to do homage.Additionally, Prince Llywelyn arranged for his son Dafydd to marry Isabella de Braose, eldest daughter of William de Braose.