On or before 24 Apr 767 Bishop Alchmund of Hexham was appointed Bishop of Hexham.
Anglo-Saxon Chronicle. 768. This year died Archbishop Egbert at York, on the thirteenth day before the calends of December, who was bishop thirty-six winters; and Frithbert at Hexham, who was bishop there thirty-four winters. Ethelbert was consecrated to York, and Elmund to Hexham.
Anglo-Saxon Chronicle. 780. This year a battle was fought between the Old-Saxons and the Franks; and the high-sheriffs of Northumbria committed to the flames Alderman Bern at Silton, on the ninth day before the calends of January. The same year Archbishop Ethelbert died at York, and Eanbald was consecrated in his stead; Bishop Cynewulf retired to Holy-island; Elmund, Bishop of Hexham, died on the seventh day before the ides of September, and Tilbert was consecrated in his stead, on the sixth day before the nones of October; Hibbald was consecrated Bishop of Holy-island at Sockbury; and King Elwald sent to Rome for a pall in behoof of Archbishop Eanbald.
On 07 Sep 781 Bishop Alchmund of Hexham died.