Barre served King Henry during the king's quarrel with
Thomas Becket, the
Archbishop of Canterbury, who had gone into exile in 1164 over the dispute about the limits of royal authority over the English Church. Because of Barre's close ties to King Henry, Becket considered him one of the king's "evil counselors", and Barre was the subject of denunciations by the archbishop. In September 1169, Barre was sent along with two other clerks to Rome to complain about the behaviour of papal envoys during negotiations with Becket held at the beginning of September. The papal negotiators initially agreed to a compromise, but the next day claimed the proposal was unacceptable. Following the failure of the negotiations, Becket restored the sentences of excommunication against a number of royal officials, but Barre was not among those specifically named, even though many of his colleagues were. The historian
Frank Barlow argues that Barre was not specifically named in the restoration of excommunications, as Becket considered him already excommunicated because of his association with those under the church's ban. During January and February 1170 the king sent Barre on a diplomatic mission to the pope in Rome, on a matter related to the king's dispute with Becket. The mission attempted to secure the rescinding of the excommunication of those whom Becket had placed under clerical ban, but it was unsuccessful; Barlow thinks it possible that Barre received a verbal agreement from the pope in January to allow the coronation, but there is no written evidence that Alexander agreed to allow the coronation in 1170. After Becket's murder in December 1170, The mission's objective was to make it clear to Alexander that Henry had had nothing to do with Becket's murder and that the king was horrified that it had taken place. Barre was at first refused a meeting with Alexander, but eventually the envoys were allowed to meet with the pope. Shortly afterwards, Barre was granted the office of Archdeacon of
Lisieux, probably as a reward for his efforts in Rome in 1171. He was named
chancellor to King Henry's eldest living son
Henry for a brief period in 1172 and 1173, but when the younger Henry rebelled against his father and sought refuge at the French royal court, Barre refused to join him in exile and returned to the king's service. Barre took with him the younger Henry's seal. and the prebend of Moreton and Whaddon in the
Diocese of Hereford from 1180 through 1184. He continued to hold the archdeaconry at Lisieux until 1188, and was at Lisieux for most of the late 1170s and 1180s. In 1179 he was at Rouen for the display of the body of Saint
Romanus and was one of the witnesses to the event. While holding his Norman archdeaconry, he gave land to the abbey of St-Pierre-sur-Dives along with
Ralph, Bishop of Lisieux. In February or March 1188, King Henry sent Barre on a diplomatic mission to the continent with letters to
Frederick Barbarossa, the German Emperor;
Béla III, the King of Hungary; and
Isaac II Angelos, the Emperor at Constantinople, seeking assistance for his projected crusade. Barre carried letters to the three rulers requesting passage through their lands and the right to procure supplies. ==Later years and death==