Constantine also appears as Arthur's heir in Thomas Malory's "Le Morte d'Arthur", including sections adapted from the Alliterative "Morte Arthure". Malory makes several changes to his source material that expand Constantine's role. Malory has Arthur designate Constantine and Baldwin of Britain as regents before going off to fight the Romans, a role that the Alliterative "Morte" ascribes to Mordred. Eugène Vinaver suggests that Malory modelled this change after Henry V's appointment of John, Duke of Bedford and Bishop Henry Beaufort as regents. Others finds it likelier that Malory simply wanted to replace Mordred in the Roman war narrative. Malory also expands Constantine's role after Arthur's death, saying that he ruled honourably and restored the Bishop of Canterbury to his seat. Scholars note that this expansion closes the book on a much more optimistic note than Malory's sources, indicating that Arthurian ideals lived on under Constantine.