
John of the Cross, venerated as Saint John of the Cross, was a Spanish Catholic priest, mystic, and a Carmelite friar of converso origin. He is a major figure of the Counter-Reformation in Spain, and he is one of the thirty-six Doctors of the Church.

Louis of Granada, was a Dominican friar who was noted as theologian, writer and preacher. The cause for his canonization has been long accepted by the Holy See.

Mary of Jesus of Ágreda , OIC, also known as the Abbess of Ágreda, was a Franciscan abbess and spiritual writer, known especially for her extensive correspondence with King Philip IV of Spain and reports of her bilocation between Spain and its colonies in New Spain. She was a noted mystic of her era.

Ursula Micaela Morata was a nun, mystic, and founder of the convent of the Capuchin Poor Clares in Alicante, Spain.

Andres de Soto or Andreas a Soto (1552/3–1625) was a Franciscan preacher and spiritual writer, confessor to the Infanta Isabella Clara Eugenia.

Teresa de Cartagena was a Spanish writer, mystic and nun who is considered to be the first Spanish female writer and mystic. She became deaf between 1453 and 1459. Her experience of deafness influenced her two known works Arboleda de los enfermos and Admiraçión operum Dey. The latter work represents what many critics consider as the first feminist tract written by a Spanish woman.

Teresa of Ávila, born Teresa Sánchez de Cepeda y Ahumada, also called Saint Teresa of Jesus, was a Spanish noblewoman who felt called to convent life in the Catholic Church. A Carmelite nun, prominent Spanish mystic, religious reformer, author, theologian of the contemplative life and of mental prayer, she earned the rare distinction of being declared a Doctor of the Church, but not until over four centuries after her death. Active during the Catholic Reformation, she reformed the Carmelite Orders of both women and men. The movement she initiated was later joined by the younger Spanish Carmelite friar and mystic John of the Cross. It led eventually to the establishment of the Discalced Carmelites. A formal papal decree adopting the split from the old order was issued in 1580.