Gonçalo da Silveira [SEP] date of death
Gonçalo da Silveira
Gonçalo da Silveira, S.J. (23 February 1526 – 6 March 1561) was a Portuguese Jesuit missionary in southern Africa.
Life.
Silveira was born at Almeirim, Portugal, about from Lisbon. He was the tenth child of Dom Luís da Silveira, first count of Sortelha, and Dona Beatriz Coutinho, daughter of Dom Fernando Coutinho, Marshal of the Kingdom of Portugal. Losing his parents in infancy, he was brought up by his sister Filipa de Vilhena and her husband, the Marquis
Nuno Martins da Silveira
Nuno Martins da Silveira (1380-1450s) was a Portuguese nobleman, Lord and alcaide of Terena. Escrivão da puridade, (King's private secretary) of Afonso V in 1450. 
Biography.
Nuno was the son of Martim Gil Pestana and Maria Gonçalves da Silveira. His wife was Leonor Falcão daughter of João Falcão, and maternal granddaughter of Gonçalo Anes de Abreu.