His chief work was against Cassian's Collatio, his De gratia dei ut libero arbitrio (432).
The descendants of one of these, Henry, known only for his translation of an Italian morality play Freewyl (Tragedio del Libero Arbitrio) by Nigri de Bassano, settled at Pyrgo in Essex.
To refute the predestinarian heresy Hincmar composed his De praedestinatione Dei et libero arbitrio, and against certain propositions advanced by Gottschalk on the Trinity he wrote a treatise called De una et non trina deitate.
De Gratia et Libero Arbitrio; given in B.
Gaz., 1907-1909); Matte, Recherches sur l'appareil libero-ligneux des Cycadacees (Caen, 1904).