Anglian Coast

The Anglian Coast faces the eastern seaways beyond which lay Mercia, an early medieval Anglo-Saxon kingdom centred on the River Trent and its tributaries. Mercia’s heartland occupied what is at that time the English Midlands, but its influence reached the North Sea coast through dependent peoples and conquered territories. The kingdom did not keep a single permanent capital. Early rulers relied on important royal estates, and the court moved among places such as Repton and Tamworth.

Between about 600 and 900, Mercia gained submissions or annexed five of the other six kingdoms of the Heptarchy and dominated England south of the Humber. King Peada’s conversion around 656 led to the creation of a Mercian diocese, first based at Repton; Bishop Chad moved the see to Lichfield in 669. Offa, reigning from 757 to 796, administered a stronger kingdom, founded market towns and had a dyke constructed as a boundary with the Welsh kingdoms. Later expansion, Danish invasion and West Saxon power reshaped the coast’s hinterland.

The Danes seized eastern Mercia in 877, creating part of the Danelaw, while Ceolwulf II retained a western kingdom until 879. Wessex then absorbed Mercia into the emerging Kingdom of England, ending its political independence while its regional identity survived as an earldom.