It was through the private devotion of many important or holy members of the Church that the public cultus of St Joseph came into existence. Among these may be named St Bernard, St Gertrude, St Brigid of Sweden, and St Vincent Ferrer. Among the most enthusiastic and influential in this respect was the Chancellor John Gerson, following the lead of his master Peter d’Ailly, and, at a later date, the Abbot Trithemius. In 1400, Gerson composed an office in honour of the Espousals of Joseph with Mary, and urged the Council of Constance to take steps for the spread of the devotion. The way had been already prepared by the Franciscans, especially St Bernardine of Siena, and Bernardine de Bustis, who showed great zeal for the worship of St Joseph.[588] These attempts resulted in the approval given to the cultus by Sixtus IV.,[589] who inserted St Joseph’s day in the Roman Breviary as a feast with one lection (_festum simplex_). Under Clement XI. it was changed into a feast with nine lections. Accordingly, at the end of the fifteenth and beginning of the sixteenth centuries, the 19th March began to be kept as St Joseph’s day in the Missals and Breviaries of many religious orders, _i.e._, the Carmelites, Hermits of St Augustine, Premonstratensians, Dominicans, Knights of St John; these were followed by the Benedictines and Jesuits, while the service-books of the Carthusians, Camaldules, Cistercians and Cluniacs of the same period remained without it.[590] Owing to the fact that later on, several royal personages such as the Emperors Ferdinand III. and Leopold I. of the House of Habsburg, and King Charles II. of Spain, were devoted to the cultus of St Joseph, Gregory XV. raised his festival to the rank of a festival of obligation in 1621. Benedict XIII. inserted his name into the Litany of the Saints, and Pius IX., on the 8th December 1870, conferred upon him the office of Patron of the Universal Church. Among the Greeks, the parents of Our Lady enjoyed a religious cultus from a comparatively early date, although all that was known of them was derived from the apocryphal _Proto-evangelium_ of James. Joachim and Anne already had their own commemoration on the 9th September in the menology of Constantinople, and Justinian I. is said to have built a church in honour of St Anne in Constantinople.[591] Their names are mentioned by Epiphanius[592] and appear in the oldest Neapolitan Calendar on the 9th September, a circumstance which shows Byzantine influence, for among the Syrians their festival is kept on the 25th July.