In 822 the Mercian king Ceolwulf I mounted an exceptionally deep raid into north Wales, reaching the Conwy estuary and destroying the royal fortress of Deganwy, the seat of the kings of Gwynedd. This penetration to the heart of Gwynedd was unprecedented. The destruction of Deganwy was a major humiliation for the Gwynedd dynasty. Two years later Mercia itself came under massive Viking pressure and could no longer project power so far west.
Aubrey generates in-depth historical research for any location in Britain — drawing on Domesday records, scheduled monuments, Victorian OS maps, geological data and archaeological archives to tell the full story of a place.
Research a location near Caernarfonshire