The Cat with Iron Claws — Catherine Fisher

The Great Enchantment is a powerful secret, and Coll is eager to learn it. He'll need it to outwit Henwen, the Old White One, a sow pregnant with three good things...and three terrible things. She leads Coll a fine dance through King Arthur's Island of the Mighty. Who will be the hero to deal with her magical, monstruous kitten? This exciting tale from the Welsh triad tradition is brilliantly retold by Catherine Fisher, the very first Young People's Laureate for Wales