Berchthun is the name of two early English prelates.
1. A bishop OF LICHFIELD, the thirteenth in the ancient lists, succeeded Cuthfrith, whose death is placed in some MSS. of Florence in 767. Little or nothing is known of his history, but he is mentioned by Matthew Paris in his Lives of the Offas. He is there made archbishop of Lichfield and confounded with bishop Humbert, who lived a half-century later. See Wharton, Anc. Sac. i, 429.
2. Otherwise styled Brihithumus, deacon of John of Beverley, bishop OF YORK, was abbot of John's monastery of "Inderauuda," or Beverley, when Bede wrote, According to the fragments of the history of Beverley preserved by Leland (Collectanea, iii, 155), he died May 15, 733; but, according to Capgrave, his death occurred in 740. He was buried at Beverley near his master.