Offa

Offa (c. 730-796), early Anglo-Saxon ruler who reigned as King of Mercia, the powerful Anglo-Saxon kingdom covering central England, and overlord of much of southern England (757-796), and took for himself the title King of All England. A member of the Mercian ruling house, Offa seized the throne after his cousin, King Aethelbald (reigned 716-757) was murdered.

The consolidation of Mercian power in southern England under the 7th-century Mercian king Penda, his son Wulfhere, and later Aethelbald, gave Offa the influence to define his borders with his neighbours. Towards his more powerful neighbours he effected a policy of conciliation. In the north he married his daughter to the king of Northumbria. In the south he married another daughter to the king of Wessex, after crushing a revolt there in 779. Offa's conquests in the west saw the incorporation into Mercia of the lower Severn river valley. The end of his expansion in this direction was signalled by what might be described as the greatest public work of the whole of the Anglo-Saxon period, the earthwork known as Offa's Dyke, which marked the boundary between Mercia and the kingdom of Wales, from the northern limit of Wales to the mouth of the River Wye.

It was, however, his activities in the south-east, towards the English Channel and beyond to the European continent, which most clearly illustrate Offa's ambitions. Continental trade and cultural relations were an important factor in Offa's strategy for Mercian predominance. To bring this into effect, he first established control over Sussex, Kent, and Essex. He also ruthlessly executed the last king of East Anglia and annexed it to Mercia. Thus he gained control of London, the country's natural political centre, Canterbury, the ecclesiastical centre, and trade routes with the continent. Offa was the first of the Anglo-Saxon kings to have instituted a foreign policy. This was largely based on relations with Charlemagne, the future Emperor of the West. It is evident that Offa was the only contemporary ruler in Western Europe who could attempt to deal on equal terms with Charlemagne, and it has been suggested that English diplomatic history begins with the letters which passed between the two. Trade relations flourished between Offa's realm and Charlemagne's Carolingian empire, culminating in a commercial treaty which guaranteed government protection for merchants on both sides of the English Channel. The growing demands of foreign trade also led to Offa's establishment of new coinage, influenced by the currency of Charlemagne's empire. The new coins were larger, finer, and more uniform in design than any previous English coins, and introduced a standard silver penny which remained the basic English currency form until the 13th century.

In 786 Pope Adrian I sent a mission to England, headed by the important prelate George, Bishop of Ostia, the first papal mission since that of St Augustine of Canterbury almost two centuries before. Offa was, however, concerned that the archbishop in Canterbury, who was the spiritual head of the southern English, had his seat in the kingdom where resistance to Mercian supremacy was strongest. He demanded that Mercia should have an independent archbishop, such as Northumbria had obtained in 735. The pope consented, and in 787 the Bishop of Lichfield became the Metropolitan of Mercia, with 7 of the 12 bishoprics previously under Canterbury placed under him. However, after Offa's death the archbishopric of Mercia lapsed, and primacy in the south reverted to Canterbury.

Offa died at the height of his powers in 796. During his last years, his supremacy throughout England was unchallenged, and no later Mercian king ever approached his power. However, Offa still remains an obscure figure. King Alfred considered him to have been a great legislator, but no copy of his laws has been preserved. His unification of southern England aroused resentment in subject kingdoms, and gave him a reputation for ruthlessness. However, above all Offa appears to have been an accomplished statesman who grasped the notion of the negotiated frontier and was the first English king to play an independent part on the continental stage. He also claimed the respect of the greatest ruler of the Dark Ages, Charlemagne. Offa's legacy therefore lies not only in his temporary and fragile unification of southern England, but also as the only Anglo-Saxon king with a broad political conception of the world at large.