Ade is a pseudonym used by the Filipino writer and journalist Jose Claudio B. Guerrero. He is best known for his novel The Sultan of Sulu, which was published in 1957. The novel is set in the Philippines during the Spanish colonial period and tells the story of a young man's journey to reclaim his rightful place as the Sultan of Sulu. ADE's work has been praised for its vivid descriptions of the culture and history of the Philippines.