Bishop of Milan in the context of "Latin liturgical rite"

The Ambrosian Rite (Italian: Rito Ambrosiano) is a Latin liturgical rite of the Catholic Church and the Eastern Orthodox Church (specifically The Divine Liturgy of Saint Ambrose). The rite is named after Saint Ambrose, a bishop of Milan in the fourth century. It is used by around five million Catholics in the greater part of the Archdiocese of Milan (excluding Monza, Treviglio and Trezzo sull'Adda), in some parishes of the Diocese of Como, Bergamo, Novara, Lodi, in the Diocese of Lugano, Canton of Ticino, Switzerland, less prominently in some Western Rite orthodox parishes and on special occasions of other jurisdictions.

The Ambrosian Rite has risked suppression at various points in its history. It was reformed after the Second Vatican Council (Pope Paul VI belonged to the Ambrosian Rite, having previously been Archbishop of Milan). In the 20th century, it also gained prominence and prestige from the attentions of two other scholarly Archbishops of Milan: Achille Ratti, later Pope Pius XI, and the Blessed Ildefonso Schuster, both of whom were involved in studies and publications on the rite.

Quintus Aurelius Symmachus signo Eusebius (/ˈsɪməkəs/, Classical Latin: [ˈsʏmmakʰʊs]; c. 345 – 402) was a Roman statesman, orator, and intellectual. He held the offices of governor of proconsular Africa in 373, urban prefect of Rome in 384 and 385, and consul in 391. Symmachus sought to preserve the traditional religions of Rome at a time when the aristocracy was converting to Christianity, and led an unsuccessful delegation of protest against Emperor Gratian's order to remove the Altar of Victory from the curia, the principal meeting place of the Roman Senate in the Forum Romanum. Two years later he made a famous appeal to Gratian's successor, Valentinian II, in a dispatch that was rebutted by Ambrose, the bishop of Milan. Symmachus's career was temporarily derailed when he supported the short-lived usurper Magnus Maximus, but he was rehabilitated and three years later appointed consul. After the death of Theodosius I, he became an ally of Stilicho, the guardian of Emperor Honorius. In collaboration with Stilicho he was able to restore some of the legislative powers of the Senate. Much of his writing has survived: nine books of letters; a collection of Relationes or official dispatches; and fragments of various orations.