The knight Arthur charged to throw Excalibur into the lake was Sir Bedivere
Avalon
King Arthur killed Mordred at the Battle of Camlann. Arthur was fatally wounded in the battle.
Paris was mortally wounded in the Trojan war by Philoctetes.
When King Arthur was wounded and Bedivere carried him to the edge of the water, a boat carrying four ladies was waiting. Bedivere placed Arthur in the boat and the women left, taking Arthur with them so he could heal in Avalon.
In some versions of the legend, King Arthur is taken to the mystical island of Avalon after being mortally wounded in battle. It is believed that Avalon is a place of healing and rest, where some believe Arthur's wounds were tended to.
King Arthur was mortally wounded at the Last Battle. He had to be carried to the water's edge. His sword Excalibur was thrown to, and caught by, the hand of the Lady of the Lake. A barge then carried King Arthur to Avalon.
King Arthur faces off with his son, Mordred in the final battle. Arthur is able to kill Mordred, but not before he was mortally wounded as well. His body was taken to Glastonbury where he died and was buried.
He was killed, or at least mortally wounded, at the battle of Camlann by his son and nephew, Sir Mordred.
In Memphis, 1968.
After King Arthur returns to Britain and defeats and kills Modredus he is mortally wounded, and is taken to the isle of Avalon to be healed of his wounds, where he died.
Mortally wounded means its going to or has already killed someone.
The knight Arthur charged to throw Excalibur into the lake was Sir Bedivere
Umm.... Ingland? I can't think of any "I" islands that are associated with King Arthur. There's Great Britain, of course, and Avalon (where he supposedly went after being mortally wounded).
Bedivere last sees King Arthur when Arthur is taken by the ladies in a boat when he is mortally wounded. Bedivere had helped him by throwing his sword into the lake and helping him into the boat. Shortly after he sees Arthur off, he finds a monastery with Arthur's grave.
In the legend of King Arthur, Excalibur is broken during the Battle of Camlann when King Arthur faces Mordred. After a fierce battle, King Arthur mortally wounds Mordred but is also fatally wounded himself. In his dying moments, Arthur orders one of his knights to throw Excalibur into a nearby lake. A hand rises from the water to catch the sword and Arthur's body is then taken to Avalon for healing.
Avalon