Although little is known about Simon Stock’s early life, legend has it that the name Stock, meaning “tree trunk,” derives from the fact that, beginning at age twelve, he lived as a hermit in a hollow tree trunk of an oak tree. It is also believed that, as a young man, he went on a pilgrimage to the Holy Land where he joined a group of Carmelites with whom he later returned to Europe. Simon Stock founded many Carmelite Communities, especially in University towns such as Cambridge, Oxford, Paris, and Bologna, and he helped to change the Carmelites from a hermit Order to one of mendicant friars. In 1254 he was elected Superior-General of his Order at London. Simon Stock’s lasting fame came from an apparition he had in Cambridge, England, on July 16, 1251, at a time when the Carmelite Order was being oppressed. In it the Virgin Mary appeared to him holding the brown scapularin one hand. Her words were: “Receive, my beloved son, thisscapular of thy Order; it is the special sign of my favor, which I have obtained for thee and for thy children of Mount Carmel. He who dies clothed with this habit shall be preserved from eternal fire. It is the badge of salvation, a shield in time of danger, and a pledge of special peace and protection.” The scapular (from the Latin, scapula, meaning “shoulder blade”) consists of two pieces of cloth, one worn on the chest, and the other on the back, which were connected by straps or strings passing over the shoulders. In certain Orders, monks and nuns wear scapulars that reach from the shoulders almost to the ground as outer garments. Lay persons usually wear scapulars underneath their clothing; these consist of two pieces of material only a few inches square. There are elaborate rules governing the wearing of the scapular: although it may be worn by any Catholic, even an infant, the investiture must be done by a priest. And thescapular must be worn in the proper manner; if an individual neglects to wear it for a time, the benefits are forfeited. TheCatholic Church has approved eighteen different kinds of scapulars of which the best known is the woolen brown scapular, or the Scapular of Mount Carmel, that the VirginMary bestowed on Simon Stock. His feast day is May 16th.
Saint Simon Stock, an Englishman who lived in the 13th century, was an early prior general of theCarmelite religious order. Little is known about his life with any historical certainty. The Blessed Virgin Mary is traditionally said to have appeared to him and given him the Carmelite habit, the Brown Scapular, with a promise that those who die wearing it will be saved. Thus, popular devotion to Saint Simon Stock is usually associated with devotion to Our Lady of Mount Carmel.
The Brothers of the Blessed Virgin Mary of Mount Carmel had their origins as a Christian hermit community in Palestine; in the early 13th century the members moved to Europe where they becamemendicant friars. Saint Simon was born in England and became an early leader of the Order as it established itself in Europe.
Historical evidence about Saint Simon’s life comes primarily from medieval catalogues of saints and of Carmelite priors general, which unfortunately are not consistent with one another in their details. The earliest of these describe Saint Simon as someone known for holiness during his life, and miracles attested to this after his death. He is said to have died on May 16, though the year is not documented. The surname “Stock” appears in some documents but not in others, and is related to a story that the Saint lived for a time in a hollow tree (“stock” meant tree trunk) before the arrival of the Carmelites in England. He is believed to have lived at Aylesford in Kent, a place that hosted in 1247 the first general chapter of the Carmelite Order held outside the Holy Land, and where there is still a monastery of Carmelite friars. Saint Simon was probably the fifth or sixth prior general of the Carmelites (historical evidence suggests perhaps from about 1256-1266), and died in Bordeaux, France, where he was buried.
The earliest extant liturgical office in Saint Simon Stock’s honour was composed in Bordeaux in France, and dates from 1435. Liturgies are first known to have been celebrated in Ireland and England in 1458, and throughout the Carmelite Order in 1564. His feast day, an optional memorial, is May 16. The Saint’s bones are still preserved in a cathedral in Bordeaux; a tibia was brought to England in the 1860s for the Carmelite church in Kensington, a part of the skull was enshrined at Aylesford in 1950. Saint Simon Stock is the patron saint of the English province of Discalced Carmelites.
Brown Scapular 
The earliest accounts of Saint Simon’s life do not mention him having a vision. The first such reference dates from the late 14th century, over 100 years after the July 16, 1251 date when tradition says the vision occurred. It states that “St. Simon was an Englishman, a man of great holiness and devotion, who always in his prayers asked theVirgin to favour his Order with some singular privilege. The Virgin appeared to him holding the Scapular in her hand saying, ‘This is for you and yours a privilege; the one who dies in it will be saved.'”  In its original context, the meaning of this promise was that Carmelite religious who persevered in their vocation would be saved. Beginning in the 16th century, the Carmelites began giving the Brown Scapular to lay people who wanted to be affiliated with the Order, and it became increasingly popular as a sacramental.
Scholarly investigation into historical source documents has raised questions about whether Saint Simon Stock’s vision actually happened, or if this tradition about him arose later, perhaps as a means of expressing in the form of a story, the strongly held Carmelite spiritual belief in the favor and protection of the Blessed Virgin Mary. Several other religious orders in the Middle Ages had similar stories of Mary giving their habit or promising protection. The great Carmelite authors of the 14th century do not mention the scapular at all. Challenges to the historicity of the scapular vision (and passionate defenses of it) are not a new phenomenon; a notable challenge came in 1653, from a scholar at theUniversity of Paris, Fr. Jean de Launoy. In response, a Carmelite named Fr. John Cheron published a fragment of a letter  which he purported to be an account by Saint Simon Stock’s secretary Peter Swanington (or Swanyngton), giving details of the Saint’s life, and the scapular vision. This document was also the origin of the date that has become traditional for the vision, July 16, 1251 (July 16 was already in the 17th century the feast of Our Lady of Mount Carmel, though that liturgy made no reference to the scapular). Today, scholars affirm that this document was a forgery and Fr. Cheron himself the likely author. Shortly after Vatican II, the historical uncertainties revealed by 20th century scholars such as Fr. Ludovico Saggi, O.Carm of the “Institutum Carmelitanum” in Rome,resulted in the Church briefly striking the feast day of Saint Simon Stock from the Carmelite liturgical calendar, though it was restored in 1979 as an optional memorial, on the condition that no mention be made of the scapular vision. Devotion to the Brown Scapular remains widespread and recommended by the Catholic Church, and the Carmelites continue to find meaning in the traditional story and iconography of Saint Simon Stock receiving the scapular, particularly as reflecting their filial relationship with Mary. When Pope John Paul II addressed the Carmelite family in 2001 on the occasion of the 750th anniversary of the bestowal of the Scapular, he said that “Over time this rich Marian heritage of Carmel has become, through the spread of the Holy Scapular devotion, a treasure for the whole Church. By its simplicity, its anthropological value and its relationship to Mary’s role in regard to the Church and humanity, this devotion was so deeply and widely accepted by the People of God that it came to be expressed in the memorial of 16 July on the liturgical calendar of the universal Church,” the Feast of Our Lady of Mount Carmel.
See also 
- Scapular of Our Lady of Mount Carmel
- Book of the First Monks
- Constitutions of the Carmelite Order
- Carmelite Rite
- St Simon Stock Catholic School
- Louis Saggi, O.Carm; Saint Simon Stock (XIII Century) Saint, Priest – Scholarly historical information
- The Friars, Aylesford Priory website (Carmelites of the Ancient Observance) A Brief History of the Friars
- Bede Edwards, OCDS. Carmel Clarion Volume XXI, pp 17-22. “St. Simon Stock–The Scapular Vision & the Brown Scapular Devotion.” July–August 2005, Discalced Carmelite Secular Order, Washington Province.
- Eamon R. Carroll, O.Carm; Medieval Devotion to Mary Among the Carmelites
- Andrew Jotischky; The Carmelites and Antiquity. Mendicants and their Pasts in the Middle Ages. Oxford: Oxford University Press, 2002.
- Fr. Kieran Kavanaugh, OCD, Zenit News Service. Brown Scapular: A Silent Devotion July 16, 2008.
- The Order of Carmelites website; Simon Stock
- Carmel, Its History, Spirit, and Saints. New York: P.J. Kennedy & Sons, 1927. pp 218-226. The Brown Scapular — Book excerpt found at the web link contains extensive quotes from the 17th century forged letter purportedly written in the 13th century by Saint Simon Stock’s secretary “Peter Swanington”. Many older sources surprisingly accepted the Swanington letter without question.
- Herbert Thurston, S.J., “The Origin of the Scapular — A Criticism.” The Irish Ecclesiastical RecordVol XVI July–December 1904. pp. 59-75. Dublin: Browne & Nolan, Limited. — well researched 1904 journal article demonstrates the falsity of the Swanington letter as well as the forged papal bull that was the basis of the “Sabbatine privilege”, discusses Carmelite history and the facts about the evolution of the scapular devotion etc.
- Fr. Paul D’Souza, OCD. The Carmelite Scapular: History and Devotion
- Pope John Paul II Message to the Carmelite Family March 25, 2001
- Catholic Encyclopedia: St. Simon Stock
- Butler’s Lives of the Saints: St. Simon Stock