Roman Catholic Diocese of Sagone

[1][2] The islands of Corsica, Sardina, and the Balearics suffered severely in the depredations of the Vandals in the second half of the fifth century.

[5] Gregory remarks that the diocese had been without a bishop for many years: ... Ecclesiam Saonensem ante annos plurimos, obejunte eius pontifice, omnino destitutam agnovimus.

It is around this time that the oldest foundations of the church on whose ruins the cathedral which came to be dedicated to St. Appianu was begun in the twelfth century.

In 1179 a bishop of Sagone, whose name is not preserved, was present at the Lateran Council of Pope Alexander III and subscribed its decrees.

[10] Pope Paul IV (1555–1559) authorized the Cathedral of Sagone to adopt the Virgin Mary of the Assumption as its patron saint.

During the French Revolution, the National Constituent Assembly reformed the Church in France, drawing up the Civil Constitution of the Clergy (12 July 1790).

[14] All clergy were obliged to swear an oath of allegiance to the Constitution,[15] thereby effectively entering into a schism with the Papacy and the Roman Catholic Church, and the number of bishoprics in France was dramatically reduced.

When the electors of Corsica assembled, they elected Ignace-François Guasco, Provost (or Dean) of the Cathedral Chapter of Mariana.