What is Dias background?

Answer 1

Unfortunately, almost nothing is known of Dias' early life. His supposed descent from one of Prince Henry the Navigator's pilots is of yet unproved, and his rank is given by different historians as the comparatively modest one of squire of the royal household, or as a Knight/Cavalier. His date of birth is unknown, and the year given as 1450. His place of birth is also unknown, all we know is that it was somewhere in Portugal.