"Sir Nigel" by Arthur Conan Doyle is a historical novel published in 1905–06. Set during the opening years of the Hundred Years' War, it follows young Nigel Loring, a knight serving King Edward III, as he seeks to prove his honor and win his lady's hand. To earn her favor, Nigel vows to complete three heroic deeds, leading him through dangerous missions, sea battles, and castle sieges across England, France, and Brittany. The novel serves as a prequel to Doyle's earlier work "The White Company." (This is an automatically generated summary.)