, or Petrus Blesensis, one of the most learned and celebrated writers of the twelfth century,
, or Petrus Blesensis, one of the most learned and celebrated writers of the twelfth century, studied at Paris and Bologna, and was appointed preceptor and secretary to William II. king of Sicily, and afterwards was invited into England by Henry II. who made him archdeacon of Bath, but permitted him to reside near Richard, archbishop of Canterbury, whose chancellor he was. Peter de Blois lost this archdeaconry towards the end of his life, and had that of London, where it is said he laboured much for little profit. He died in 1200, in England. There are some letters, sermons, and other works of his, in the library of the fathers, in which he strongly condemns the abuses and disorders which then reigned in the church. He is said to have been the first who used the word transubstantiation, to express the doctrine of the Romish church on the subject of the eucharist. The best edition of this author is by Peter de Gussanville, 1667, folio.