The Order of the Most Holy Trinity and of the Captives, usually shortened to The Order of the Most Holy Trinity, is a Catholic religious Order founded near the end of the 12th century in France. Although Church documents refer to the Order's founder only as Brother John, tradition identifies him as Saint John de Matha. Other members of the Trinitarian Family include The Order of the Most Holy Trinity, the Trinitarian Contemplative Sisters, the Trinitarian Sisters of Valence, the Trinitarian Sisters of Rome, Valencia, Madrid, Mallorca and Seville, as well as the Oblates of the Most Holy Trinity, the Third Order Secular, and other Trinitarian Laity, each of which are distinguished by a cross of red and blue. The Scapular of the Holy Trinity is a devotional scapular associated with the Confraternity of the Holy Trinity and the Third Order Secular of the Most Holy Trinity. It is a white scapular with a cross, on which the transverse shaft is blue, while the longitudinal shaft is red. The patroness of the Order of the Most Holy Trinity is Our Lady of Good Remedy, and the Order has a special dedication to the mystery of the Holy Trinity. Its rule is the Trinitarian Rule, which has been revised several times over the years. At the time that the Order was founded, medieval Europe was in a state of war between the Christian kingdoms in southern Europe and the Muslims of North Africa, Southern France, Sicily, and parts of Spain. The chief purpose of the Order was the redemption, by ransom, of Christians who were held captive by the Muslims. In addition, the Order was involved in caring for the sick and poor, educating the poor, establishing churches, and evangelization. King (Saint) Louis IX chose the Trinitarians as his chaplains, and they accompanied him on his crusades. The Missionary Servants of the Most Blessed Trinity, founded by Thomas Augustine Judge in 1909, is unrelated to the Trinitarian Family, but will be listed here as well, for the purposes of categorization.
 
 
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Missionary Servants of the Most Blessed Trinity
Founded by Thomas Augustine Judge, a Vincentian priest, in 1909, the Catholic congregation was first known as the Missionary Cenacle Apostolate, becoming the Missionary Servants of the Most Blessed Trinity in 1931 when the organization received canonical status. The congregation serves the Church in several dioceses within the United States, Puerto Rico, and Mexico.
https://www.msbt.org/
Order of the Most Holy Trinity and of the Ransom of Captives
The Trinitarians are a Catholic religious family founded by John of Matha with its own Rule, approved by Pope Innocent III in 1198. The first official institution of the Church dedicated to the service of redemption and unarmed, with no other weapon beside mercy, serving the purpose of returning hope to captive Christians. The official international site offers an overview of its organizational structure.
http://www.trinitari.org/
The Order of the Most Holy Trinity and of the Captives
Known as the Trinitarians, the Order was established in the 12th century for the purpose of ransoming Christians who were held captives my Muslims and other non-Christians. Its history, spirituality, and apostolate are defined, with a historical sketch of its ministries to persecuted Christians and its ministries today. Authors are defined, and information about contributing articles to the site is included.
http://thetrinitarians.com/
The Order of the Most Holy Trinity was founded by John de Matha with its own Rule in 1198, and renewed by Saint John Baptist of the Conception. The roots of the Order, its mission, spirituality, and community life are set forth, with an introduction to the Trinitarian Nuns and Sisters, Trinitarian Laity, and their shared mission. General information about its vocations, formation process, and contacts are included.
http://www.trinitarians.org/
The Order of the Most Holy Trinity and of the Captives, commonly known as The Trinitarians, is a religious Order of the Roman Catholic Church. Founded by Saint John de Matha in 1198, the Order works in five communities within India, including Minor Seminary at Thrissur, Novitiate House at Kasaragod, Philosophy and Theology House at Bangalore, the Mission House in Assam, North East, and the House in Shimoga.
http://trinitariansindia.org/
The Missionary Servants of the Most Holy Trinity is a Catholic congregation of priests and brothers founded by Thomas A. Judge in 1929, whose chief mission is to the poor and abandoned. Its history, mission statement, and locations are presented, along with its formation policies and procedures, a vocation profile form, handbook and curriculum, and updates from its vocation directors.
http://trinitymissions.org/