Hasdai Crescas was a brilliant Talmudist of the 14th century in Spain. Crescas is of particular note to those interested in the history of Crypto-Judaism because he lost his son during the mass violence of 1391 that was perpetrated against the Jewish communities of Castile and Aragon and which led to the rise of the Conversos problem.
He mourned the death of his son and produced an account of the tragic events of 1391. Crescas had already witnessed the volatile nature of life in Christian Spain when he along with his mentor Rabbi Nissim Gerondi were arrested in 1367. They were accused of having disrespected Christianity.
Hasdai Crescas eventually penned a philosophical critique of Christianity. The following article in the Canadian Jewish News, sheds light on his interesting approach.