Various, Encyclopaedia Britannica, 11th Edition…
“ He also dragged the Western clergy into the pope’s quarrel with the emperor at Constantinople, by summoning the council of Gentilly, at which the iconoclastic heresy was condemned (767) . Matters being thus settled with Rome, Pippin again took up his wars against the Saxons, against the Arabs (whom he drove from Narbonne in 758) , and above all against Waïfer, duke of Aquitaine, and his ally, duke Tassilo of Bavaria. This last war was carried on systematically from 760 to 768, and ended in the death of Waïfer and the definite establishment of the Frankish hold on Aquitaine. ”
