Tertiarians (Fr. tierciare, from Lat. terti-arius, containing a third part), men or women belonging to the "third order " in any one of the monastic orders. The tertiarians, without living in cloistered communities, bind themselves by simple vows to certain prayers and observances of the order. Such an organization of secular persons occurs for the first time in the history of the Premonstratensians, and another was connected with the order of the Templars. But it did not become generally known until Francis of Assisi, after founding the order of the Franciscans (the first order) and the order of the Poor Clares (second order), founded a third one for the numerous laymen who wished to conform themselves to the mode of life of the Franciscans as much as secular occupations would permit. When their number increased, many of them resolved to adopt the common life, and thus the third regular order of Franciscans arose. (See Franciscans, vol. vii., p. 425.) The example of the Franciscans was followed by the Dominicans, Augustinians, Carmelites, Servites, and other orders, all which have connected with them both tertiarians living in the world, and regular tertiarians living in common.