sentences:  But most important, in the words of Prince Henry's personal chronicler, is that the Prince "ordered [Portuguese navigators and captains] to find the islands", rather than just sending his fleets into the unknown to discover what they could.The exact date of this re-discovery of the Atlantic islands is not clear, though historical accounts indicate that the islands of Santa Maria and São Miguel were the first to be discovered by navigator Diogo de Silves around 1427.One fact often debated is the origin of the name "Azores" used to identify the archipelago.