philip returned home to discover that the duke of lancaster had taken over control of avranches and installed an english garrison there. outraged philip went to lancaster's camp outside rennes to complain. though lancaster agreed to reinstate the navarrese garrison his captains remained in possession. philip also became embroiled in another dispute with the english government. when the heirless norman nobleman godfrey of harcourt fell in battle against the french in november 1356 philip had taken possession of his castle, saint-sauveur-le-vicomte, one of strongest and most valuable in the region. however edward iii sent his own men to take over the castle, citing a previous agreement with godfrey of harcourt had gifted the castle to the english king. philip sent his chancellor to westminster to protest, but was overruled.