Barriere (Or Barreria), Pierre De
a cardinal, and bishop of Autun, a native of Rodez, lived at the close of the 14th century. He refused to accept the cardinalate at the hand of pope Urban VI, because he believed that this pontiff had not been legally elected, but accepted it later from Clement VII. He wrote a treatise upon schism, directed against John of Lignano, defender of Urban; it was published in Duboulav's Histoireded I'Uziversiti de Paris, vol. iv. See Hoefer, Nouv. Biog. Generale, s.v.