'Armant' (Malory's Hermaunce) is a different character, not evil, who was slain by a serf and was king of the Red City/Ile Delitable in the Prose Tristan and Malory. But he died before the Grail Quest and can't be the same man who bore these arms.
'Armant' (Malory's Hermaunce) is a different character, not evil, who was slain by a serf and was king of the Red City/Ile Delitable in the Prose Tristan and Malory. But he died before the Grail Quest and can't be the same man who bore these arms.