Bartholomeu Diaz was a Portuguese explorer who was the first European to round the southern tip of Africa in 1488. There are a few synonyms for the name Bartholomeu Diaz, including alternate spellings such as Bartholomeus Diaz or Bartolomeu Dias. He was also known by his nickname, "The Navigator," which was a common title given to Portuguese explorers during this time period. Diaz's voyage opened up new trade routes between Europe and Asia, and his discoveries paved the way for future explorers like Vasco da Gama. Despite his significance, Diaz's name is sometimes spelled incorrectly due to the variations in spelling and pronunciation.