Arthur's Legend 1 is a red tome. Accordingly, it tells about the time before King Arthur's birth.
In gameplay, the player can collect Arthur's Legend 1 during different Missions in certain areas. For then to obtain it, the player must use the ID points earned from completing the Mission where the Arthur's Legend 1 was picked up to identify it on the identification screen. Once secured, Arthur's Legend 1 will appear in the Gallery of Sonic and the Black Knight where it says the following:
|ID Point Price||6|
|Location||Deep Woods ("Ring Giver: Give the Townspeople 80 Rings" and "Special Challenge: Reach the Lady of the Lake")|