Sir Galahad, the Pure of Heart
Sir Galahad, the son of Sir Lancelot and Elaine, was raised in a convent by his aunt. His father, Sir Lancelot, left his mother since he did not love her.
When he came of age, Galahad went to King Arthur's court at Camelot and was knighted by his father, Sir Lancelot. He was also accompanied by a very old knight, who led Galahad to the one empty seat at the Round Table, the Siege Perilous. The seat was reserved for only the person who would find the Holy Grail. Others had tried to sit in it but they were instantly burned or killed. Galahad sat in the chair with ease. Seeing this, King Arthur then led Sir Galahad to a sword in a stone with an inscription that read, "Never shall man take me hence but only he by whose side I ought to hang; and he shall be the best knight of the world." Galahad, once again, easily accomplished this task. King Arthur proclaimed that Sir Galahad is the greatest of all knights, and on returning to the feast, they all saw a vision of the Holy Grail. The Knights of the Round Table all began their Grail Quests at this time.
Sir Galahad traveled alone on his Grail Quest for some time, but he was always successful in his deeds. He rescued maidens in distress, and he also rescued Sir Percival from twenty knights. The two of them, along with Sir Bors, travelled to a distant land. They arrived at the court of King Pelles, Sir Galahad's grandfather. He showed them the Holy Grail. Since Galahad was the only one worthty of it, being pure of heart and righteous, he ascends into Heaven with the Grail. Sir Bors returns to Camelot to tell the tale.
More information here and here and here
Galahad's Grail Quest here
When he came of age, Galahad went to King Arthur's court at Camelot and was knighted by his father, Sir Lancelot. He was also accompanied by a very old knight, who led Galahad to the one empty seat at the Round Table, the Siege Perilous. The seat was reserved for only the person who would find the Holy Grail. Others had tried to sit in it but they were instantly burned or killed. Galahad sat in the chair with ease. Seeing this, King Arthur then led Sir Galahad to a sword in a stone with an inscription that read, "Never shall man take me hence but only he by whose side I ought to hang; and he shall be the best knight of the world." Galahad, once again, easily accomplished this task. King Arthur proclaimed that Sir Galahad is the greatest of all knights, and on returning to the feast, they all saw a vision of the Holy Grail. The Knights of the Round Table all began their Grail Quests at this time.
Sir Galahad traveled alone on his Grail Quest for some time, but he was always successful in his deeds. He rescued maidens in distress, and he also rescued Sir Percival from twenty knights. The two of them, along with Sir Bors, travelled to a distant land. They arrived at the court of King Pelles, Sir Galahad's grandfather. He showed them the Holy Grail. Since Galahad was the only one worthty of it, being pure of heart and righteous, he ascends into Heaven with the Grail. Sir Bors returns to Camelot to tell the tale.
More information here and here and here
Galahad's Grail Quest here