On the 5th of May the barons formally renounced their allegiance to John, and appointed Robert Fitzwalter as their leader.
ROBERT FITZWALTER (d.
Fitzwalter escaped a trial by flying to France.
Brycheiniog was then converted into a lordship marcher and passed to the Fitzwalter, de Breos, the Bohun and the Stafford families in succession, remaining unaffected by the Statute of Rhuddlan (1282), as it formed part of the marches, and not of the principality of Wales.
Their captain was Robert FitzWalter, whom they had named marshal of the army of God and Holy Church.