He gave the Famous Adventurer a stealth charm.
He later retired to take up falconry.
The Mouse, and the reference to falconry, are both references to the movie "Ladyhawke". In the movie, Matthew Broderick plays a thief named Philippe "The Mouse" Gaston, and another character is cursed to turn into a hawk. The movie takes place in Aquila, France - the Gloriana equivalent of France is Gaul.