- (c. 1362-1435) Son of Maria Teles, sister of Queen Leonor Teles, and of Álvaro Dias de Sousa, Lord of Mafra and Ericeira.
- According to Fernão Lopes, he was made Master of the Order of Christ still a child, owing to the influence of his aunt, Queen Leonor Teles. [Fernando, ch. 65: 33-35]
dom Lopo Diaz