Zacarias of Saint Teresa was a Spanish Discalced Carmelite priest who dedicated his life to missionary work in India. Born Zacarías Salterain-Bizkarra in Abadiño in 1887, he entered the religious life in 1904 at the Larrea convent. After his ordination in Rome in 1912, he traveled to India to serve the church. He remained active in his missionary duties until his passing in 1957 at the Christian Medical College in Vellore.