The Marauder’s Map was, however, of immense use to the young Weasley twins. The story of Fred and George’s acquisition of the map is told in Harry Potter and the Prisoner of Azkaban. It was a mark of their high esteem for Harry Potter, and their belief that he stood in need of assistance with a destiny none of them yet fully understood, that they later gifted the map to him, unwittingly passing it on to the child of one of the creators.

