The islands were known to Europeans in the 14th century, and parts of them appear in the Catalan Atlas. In 1427, a captain sailing for Prince Henry the Navigator, possibly Gonçalo Velho, may have rediscovered the Azores, but this is not certain. In Thomas Ashe's 1813 work, "A History of the Azores", the author identified a Fleming, Joshua Vander Berg of Bruges, who made landfall in the archipelago during a storm on his way to Lisbon. He stated that the Portuguese explored the area and claimed it for Portugal. Other stories note the discovery of the first islands (São Miguel, Santa Maria and Terceira) by sailors in the service of Henry the Navigator, although there are few documents to support the claims.