Feargal was an Irish monk.

Lived at first in France and then in Bavaria and is associated with a monastery of Chiemsee.

Bishop of Salzburg 754

dispute with boniface

died 784 with a reputation for holiness.

Boniface completed the work of St. Rupert, placed the Diocese of Salzburg under the Primatial See of Mainz, and substituted the Benedictines for the Irish monks in St. Peter's. He had a dispute with their abbot-bishop Virgil concerning the existence of the antipodes. Virgil dispatched the regionary bishop Modestus to Carinthia, of which the latter became the apostle. Under Virgil the valuable "Liber confraternitatum", or confraternity book of St. Peter's, was begun.

In Christian art St. Rupert is portrayed with a vessel of salt in his hand, symbolizing the universal tradition according to which Rupert inaugurated salt-mining at Salzburg; this portrayal of St. Rupert is generally found upon the coins of the Duchy of Salzburg and Carinthia. St. Rupert is also represented baptizing Duke Theodo; this scene has no historical foundation. The site oc­cu­pied by the Salzburg Cathe­dral was prob­a­bly a sa­cred place for sacrifices in Celtic as well as Roman times. The first cathe­dral was built un­der Saint Vergilius of Salzburg, who might have used foun­da­tions by St. Ru­pert. The first Dom was recorded in 774.

The so-called Vir­gil Dom was built from 767 to 774 and was 66 me­tres long and 33 me­tres wide. Archbishop Arno (785 – 821) was the first to ar­range ren­o­va­tions of the Dom, which was in place for less than 70 years. In 842, the build­ing burned down af­ter be­ing struck by lightning. Three years later, the re-erection of the build­ing started.

The Salzburg Cathedral (German: Salzburger Dom) is a 17th century baroque cathedral of the Roman Catholic Archdiocese of Salzburg in the city of Salzburg, dedicated to Saint Rupert of Salzburg. It is the site of Mozart's baptism.

The site occupied by the Salzburg Cathedral was probably a sacred place for sacrifices in Celtic as well as Roman times. The first cathedral was built under Saint Vergilius of Salzburg, who might have used foundations by St. Rupert.
  
 
 
The first cathedral was built on this site by Bishop Virgil who came to Salzburg in 767 and built a cathedral on the site of the former Roman Juvavum. On September 24, 774 the cathedral was consecrated to St. Virgil and St. Rupert.