Ulfberht was the sword of Uther Pendragon. After Merlin stole Excalibur, Ulfberht became Uther's main sword. When Uther used it to fight Merlin, who was wielding Clarent, the sword's blade broke in half. The remaining half of it is kept in the vaults of Camelot.
Ulfberht is a four foot early medieval celtic sword. Its blade is enscribed with the word +ULFBERH+T. It has a wooden grip and a short crossguard.