Offa campaigned in Wales in 784 and constructed Offa's Dyke as a permanent boundary marker between Mercia and the Welsh kingdoms. The dyke, running from the Dee to the Severn, was the largest construction project of early medieval Britain and required extraordinary royal authority to complete. Offa also raided into Wales periodically to enforce tributary relationships.
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 Flintshire