Sir Bedivere was a trusty supporter of King Arthur from the beginning of his reign, and one of the first knights to join the fellowship of the Round Table. He helped Arthur fight the Giant of Mont St. Michel, and later he was made Duke of Neustria.  Bedivere had only one hand later in life, having lost one of his hands in a battle. He had a son called Amren and a daughter named Eneuavc.
Bedivere was present at the Last Battle, the fateful Battle of Camlan. He and Arthur alone survived the battle, and he was given the command by Arthur to throw Excalibur back into the Lake. After lying twice to Arthur, he finally tossed the precious sword out into the lake, and the hand of the Lady of the Lake came up and retrieved the sword to its watery home. 
The name Bedivere comes from the Welsh Bedwyr. His grandfather was also named Bedivere, and he founded the city of Bayeux. Bedivere was killed in the Roman Campaign.