Celtic god Lug, may also originally have been a sun deity and there is evidence to link Sir Gawain with Cú Chulainn, as well as a giant churl with Cú Roi. Cú Chulainn besieges a castle belonging to Cú Roi mac Dáire in another ancient Irish tale, in order to release a flower maiden, and as Cú Roi is often depicted as a giant and Cú Chulainn as a child, such myths may show the old sun giving way to the new sun in order to release an Irish Percephone. Allusions to the seasons are obvious. But from other tales, of course, it is seen that Cú Roi is able to pick up his severed head and live to fight another day; just as the Carle of Carlisle is able to survive the spear, and in one instance a stroke of his own sword, discard his giant churlish nature and emerge, as though released from his Otherworld castle and its enchantments, as Sir Carlisle, a knight of the Round Table. Giants King Arthur defeats an enormous giant at the top of Mont Saint-Michel on his way to face a Roman army in the Alliteratiuve Morte Arthure. Sir Yvain rescues some of Sir Gawain's nephews from a terrifying giant in Chretien de Troyes' Yvain, the Knight of the Lion. The Fair Unknown kills three during his journey to rescue a lady trapped behind a stone wall. Giants, however, occur more widely in medieval romance and are not at all confined to Arthurian tales. Sir Eglamour of Artois kills one that is sixty feet tall, in a forest far to the west. Sir Tryamour cuts one down to size in the Middle English verse romance Sir Tryamour. Florent defeats one that is besieging Paris in the Old French romance Octavian. Giants abound in medieval romance, as well as in Welsh, Irish and Scandinavian mythology. Mist Whilst chasing the deer, Sir Gawain, Sir Kay and Bishop Baldwin encounter a mist: "A thicke mist fell them among, That caused them all to goe wronge." A mist is often a precursor to an entry into the Otherworld in ancient Irish stories. It is also a feature of the approach into the Scandinavian Otherworld where giants live. Egil was swimming one day when a mist descended, in the Scandinavian mythological romance Egil and Asmund. He swum for two days until making it to a shore, slept