Complex sentence: In later centuries, divine kingship myths would flourish in the legends of Charlemagne as a divinely-appointed Christian king, and he became the central character in the Frankish mythology of the epics known as the Matter of France.
Split into simpler sentences: In later centuries, divine kingship myths would flourish in the legends of Charlemagne as a divinely-appointed Christian king. He was the central character in the Frankish mythology of the epics known as the Matter of France.