Peter, Duke of Coimbra
Henry also had other resources. When John I died in 1433, Henry's eldest brother Edward of Portugal became king. He granted Henry all profits from trading within the areas he discovered as well as the sole right to authorize expeditions beyond Cape Bojador. Henry also held a monopoly on tuna fishing in the Algarve. When Edward died eight years later, Henry supported his brother Peter, Duke of Coimbra for the regency during the minority of Edward's son Afonso V, and in return received a confirmation of this levy.