Gatianus (Catianus, Gatianus, Gratianus; French: Cassien, Gatien, Gratien) (3rd century CE) was the founding bishop of the see of Tours.
According to Christian historians, during the consulship of the Emperor Decius and Vettus Gratus (250 CE), Pope Fabian sent out seven bishops from Rome to Gaul to preach the Gospel: Gatianus to Tours, Trophimus to Arles, Paul to Narbonne, Saturnin to Toulouse, Denis to Paris, Austromoine to Clermont, and Martial to Limoges. A community of Christians had already existed for many years in Lyon, where Irenaeus had been bishop.
Gatianus devoted half a century to evangelization, against the objections of the Gauls. According to the Catholic Encyclopedia, he managed anyway to gather apostles round him, whom he sent out to establish churches, and at his death the diocese of Tours was securely established. As with other founders of the seven Catholic churches of Gaul, especially Martial, Gatianus became confounded in later Christian mythology with the "seventy-two disciples of Christ", alleged to have been sent into Gaul during the first century, by Saint Peter himself. Other details of his biography, while not as easily disprovable, are also largely legendary. Gregory of Tours, writing in the 6th century, is a more dependable source for the few biographical details concerning his predecessor. According to the Catholic historian Mons. Louis Duchesne (Christian Worship: Its Origin and Evolution), the traditions preserved at Tours furnished Gregory with only the name of Gatianus and perhaps the 50-year extent of his episcopacy; it was by comparison with a brief early biography of Saturninus of Toulouse (Passio S. Saturnini) that Gregory arrived at the date 250, for the beginning of Gatianus' ministry at Tours (History of the Franks, 1.30).
Gratian (/ˈɡreɪʃən/; Latin: Flavius Gratianus Augustus; 18 April/23 May 359 – 25 August 383) was Roman emperor from 375 to 383. The eldest son of Valentinian I, during his youth Gratian accompanied his father on several campaigns along the Rhine and Danube frontiers. Upon the death of Valentinian in 375, Gratian's brother Valentinian II was declared emperor by his father's soldiers. In 378, Gratian's generals won a decisive victory over the Lentienses, a branch of the Alamanni, at the Battle of Argentovaria. Gratian subsequently led a campaign across the Rhine, the last emperor to do so, and attacked the Lentienses, forcing the tribe to surrender. That same year, his uncle Valens was killed in the Battle of Adrianople against the Goths – making Gratian essentially ruler of the entire Roman Empire. He favoured Christianity over traditional Roman religion, refusing the divine attributes of the Emperors and removing the Altar of Victory from the Roman Senate.
Gratian was the son of Emperor Valentinian I by Marina Severa, and was born at Sirmium (now Sremska Mitrovica, Serbia) in Pannonia. He was named after his grandfather Gratian the Elder. Gratian was first married to Flavia Maxima Constantia, daughter of Constantius II. His second wife was Laeta. Both marriages remained childless. His stepmother was Empress Justina and his paternal half siblings were Emperor Valentinian II, Galla and Justa.
Gratian or Gratianus (died 407) was a Roman usurper (407) in Roman Britain.
Following the death of the usurper Marcus, Gratian was acclaimed as emperor by the army in Britain in early 407. His background, as recorded by Orosius, was that he was a native Briton and one of the urban aristocracy. His rule coincided with a huge barbarian invasion that had afflicted Gaul, possibly with the connivance of Stilicho, the Emperor Honorius’s magister militum, who was concerned about the British usurpers. On the last day of December 406, an army of Vandals, Alans and Suebi (Sueves) had crossed the frozen Rhine. During 407, they spread across northern Gaul towards Boulogne, and Zosimus wrote that the troops in Britain feared an invasion across the English Channel.
The army wanted to cross to Gaul and stop the barbarians but Gratian ordered them to remain. Unhappy with this, the troops killed him after a reign of four months and chose Constantine III as their leader.
Geoffrey of Monmouth describes a similar character, named Gracianus Municeps, who is likely the same figure.
The Decretum Gratiani, also known as the Concordia discordantium canonum or Concordantia discordantium canonum, is a collection of Canon law compiled and written in the 12th century as a legal textbook by the jurist known as Gratian. It forms the first part of the collection of six legal texts, which together became known as the Corpus Juris Canonici. It was used by canonists of the Roman Catholic Church until Pentecost (May 19) 1918, when a revised Code of Canon Law (Codex Iuris Canonici) promulgated by Pope Benedict XV on 27 May 1917 obtained legal force.
It was about 1150 that Gratian, teacher of theology at the monastery of Saints Nabor and Felix and sometimes believed to have been a Camaldolese monk, composed the work entitled by himself, Concordia discordantium canonum, but called by others Nova collectio, Decreta, Corpus juris canonici, also Decretum Gratiani, the latter being now the commonly accepted name. He did this to obviate the difficulties which beset the study of practical, external theology (theologia practica externa), i. e. the study of canon law. In spite of its great reputation and wide diffusion, the Decretum has never been recognized by the Church as an official collection.
Tours (French pronunciation: [tuʁ]) is a city located in the centre-west of France. It is the administrative centre of the Indre-et-Loire department and the largest city in the Centre-Val de Loire region of France (although it is not the capital, which is the region's second-largest city, Orléans). In 2012, the city of Tours had 134,978 inhabitants, while the population of the whole metropolitan area was 483,744.
Tours stands on the lower reaches of the River Loire, between Orléans and the Atlantic coast. The surrounding district, the traditional province of Touraine, is known for its wines, for the alleged perfection (as perceived by some speakers) of its local spoken French, and for the Battle of Tours, which took place in 732. The city is also the end-point of the annual Paris–Tours cycle race.
In Gallic times the city was important as a crossing point of the Loire. Becoming part of the Roman Empire during the 1st century AD, the city was named "Caesarodunum" ("hill of Caesar"). The name evolved in the 4th century when the original Gallic name, Turones, became first "Civitas Turonum" then "Tours". It was at this time that the amphitheatre of Tours, one of the five largest amphitheatres of the Empire, was built. Tours became the metropolis of the Roman province of Lugdunum towards 380–388, dominating the Loire Valley, Maine and Brittany. One of the outstanding figures of the history of the city was Saint Martin, second bishop who shared his coat with a naked beggar in Amiens. This incident and the importance of Martin in the medieval Christian West made Tours, and its position on the route of pilgrimage to Santiago de Compostela, a major centre during the Middle Ages.