John of the Cross n (Biography) Saint. original name Juan de Yepis y Alvarez. 1542?91, Spanish Carmelite monk, poet, and mystic. He founded the Discalced Carmelites with Saint Teresa (1568). Feast day: Dec 14 Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014