Was Diego Dias the son of Bartolomeu Dias?

Answer 1

No. Portuguese historians have described famous navigator Bartolomeu Dias [c. 1450-May 29, 1500] as having fathered only two children, Simao and Antonio. Both sons used as their last names Dias de Novais. Simao Dias de Novais never married, and left no known children. Antonio Dias de Novais married Joana Fernandes, whom Portuguese historians have identified as a relative in an unspecified way. Antonio became a Knight of the Order of Christ, and fathered two children. The couple's son Paulo Dias de Novais led the colonization of Angola in the 16th century. Antonio's and Joana's daughter Guiomar was the second wife of Dom Rodrigo de Castro. The couple had two children, Dona Paula de Novais and Dona Violante de Castro, neither of whom were known to marry or have children. Guiomar had no children with her second husband, Pedro Correia da Silva. And so the line of descent ended with the two great granddaughters of Bartolomeu Dias. Portuguese historians have identified Pero Dias and Diogo Diasas Bartolomeu's brothers. Pero most likely was a younger brother. For he commanded the supply ship to Bartolomeu's expedition of 1487-1488 around the southern tip of Africa, past the Cape of Good Hope. Diogo has been credited as having helped in the discovery of the Cape Verde Islands. Portuguese historians have indicated that he was also called Diogo Gomes [c. 1420-c.1485]. Perhaps two people of the same name, and in the same line of work, became confused over time. For Diogo Gomes would have been 30 years older than Bartolomeu. Was Diogo instead Bartolomeu's father or uncle? It's possible that specific answers about Bartolomeu's ancestors and relatives may be found in an archive in Portugal. Or perhaps answers may be found among the records of the Catholic Church.

Answer 2

There is no historical record of Diego Dias being the son of Bartolomeu Dias. Diego Dias was a Portuguese explorer who was part of an expedition to Madagascar in 1500, while Bartolomeu Dias was known for being the first European to round the southern tip of Africa in 1488.