In 1236, with the object of emancipating himself from Edmund's control, the king asked the pope to send him a legate. On the arrival of Cardinal Odo in 1237 the archbishop found himself thwarted and insulted at every point. The politically significant marriage between Simon de Montfort and Henry's sister Eleanor, which Edmund had pronounced invalid, was ratified at Rome upon appeal. The king and legate upheld the monks of Canterbury in their opposition to Edmund's authority. Edmund protested to the king, and excommunicated in general terms all who had infringed the liberties of Canterbury. These measures had no impact, and the pope could not be moved to reverse the legate's decisions. Edmund complained that the discipline of the national church was ruined by this conflict of powers, and began to consider retirement.