Conscience of the King by Alfred Duggan
Cerdic Elesing, King of Wessex and ancestor of all subsequent British monarchs, narrates in this fictional biography how he murdered, cheated, looted and lied his way to the great position he ultimately held - and in the process served with the great Roman leader Ambrosius and the Saxon warlord Aella, and was the foe Arthur defeated at Mount Badon.