William Legrand is a fictional character created by the American author Edgar Allan Poe. He appears in the short story "The Gold-Bug," which was first published in 1843. Legrand is depicted as an intelligent and resourceful man who becomes obsessed with a mysterious gold bug, leading him on a treasure hunt. In the story, Legrand's adventures take place on Sullivan's Island, South Carolina. He uses his skills in cryptography and deduction to solve puzzles and uncover hidden treasure. The character is notable for his cleverness and determination, making him a memorable figure in American literature.