Johannes Scotus Eriugena
There Hincmar tried again to induce him to retract. Gottschalk however continued to defend his doctrine, writing to his friends and to the most eminent theologians in the lands of Charles the Bald and Louis the German. A great controversy resulted. Prudentius of Troyes, Wenilo of Sens, Ratramnus of Corbie, Loup de Ferrières and Florus of Lyon wrote in his favour. Hincmar wrote "De praedestinatione" and "De una non trina deitate" against his views, but gained little aid from Johannes Scotus Eriugena, whom he had called in as an authority.