Complex sentence: Sometimes "Franci" is used to describe the Normans who at that time certainly did not regard themselves as French Wiliam's uncle The Archbishop of Rouen spoke of wiping out the vainglorious French, "Francos debellare superbos".
Split into simpler sentences: Sometimes "Franci" is used to describe the Normans. At that time the Normans certainly did not regard themselves as French Wiliam's uncle The Archbishop of Rouen spoke of wiping out the vainglorious French, "Francos debellare superbos".