On this day we celebrate the feast of St. John of Avila.
He was born in 1499 to Alfonso of Avila and Catherine Xixon. "His father was of Jewish ancestry, and his mother may also have been Jewish. Consequently, John of Avila 'had race' (ten'a raza), to use the expression current at the time to distinguish 'new Christians' or converts from 'old Christians'."
-- Audi, Filia -- Listen, O Daughter, by St. John of Avila, translated and introduced by Joan Frances Gormley, D.C., Paulist Press, 2006.
To understand what this meant in 16th-century Spain, see "Avila's Family and Jewish Background", page 4.