Why was Tennyson interested in Galahad?

Alfred, Lord Tennyson was interested in Galahad, a knight of the Round Table, because of his representation of purity, goodness, and idealism. Tennyson admired the character of Galahad for his unwavering commitment to his quest for the Holy Grail and his moral righteousness. Galahad embodied the qualities of chivalry and moral virtue that appealed to Tennyson's Victorian sensibilities.