sentences:  Conflicted sources
  
  The "Chronicon ex chronicis" (1140) also contains a list of the names of the Bishops of Whithorn located in "The Territory of the Picts", with Pehthelm listed as the second bishop, after Trumwine.Trumwine was consecrated as bishop of the Picts in 681, and his diocese was briefly based at Abercorn, just south of the Firth of Forth.However, this was abandoned after the Pictish victory over the Northumbrians at the Battle of Nechtansmere in 685.