Teresa of Jesus of Los Andes, born as Juana Enriqueta Josephina de Los Sagrados Corazones Fernández Solar, was a Chilean nun of the Discalced Carmelites. Fernández Solar was a pious child but had an often unpredictable temperament for she could be prone to anger and being vain but could also demonstrate her charitable and loving nature; she seemed transformed when she decided to become a nun and her character seemed to change for her sole ambition was to dedicate herself to the service of God. But her time in the convent was cut short due to her contracting an aggressive disease that killed her - she knew she would die but was consoled knowing she would be able to make her profession before she died.

The Discalced Carmelites, known officially as the Order of the Discalced Brothers of the Blessed Virgin Mary of Mount Carmel or the Order of Discalced Carmelites, is a Catholic mendicant order with roots in the eremitic tradition of the Desert Fathers. The order was established in the 16th century, pursuant to the reform of the Carmelite Order by two Spanish saints, Teresa of Ávila (foundress) and John of the Cross (co-founder). Discalced is derived from Latin, meaning "without shoes".