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People: François Denis Tronchet
Topic: Manupur, Battle of (1748)

The so-called "Mercian Supremacy" dominates the eighth …

Years: 676 - 819
The so-called "Mercian Supremacy" dominates the eighth century, though it is not constant.

Aethelbald and Offa, the two most powerful kings, achieve high status; indeed, Offa is considered the overlord of south Britain by Charlemagne.

That Offa could summon the resources to build Offa's Dyke is testament to his power.

However, a rising Wessex, and challenges from smaller kingdoms, keep Mercian power in check, and by the early ninth century the "Mercian Supremacy" is over.