Hervé de Donzy, the Lord of Saint Aignan established Cornilly Abbey in the 11th century. It was authorized by Pope Urbanus II in 1091. The abbey grew rapidly, but in the 1357 it was destroyed by English Black Prince troops during the Hundred Years' War. Monks rebuilt the abbey, but it was again destroyed by religious fanatics in 1562. It was not rebuilt again and in the Revolution (1789) it was moved as a national property. Today impressive ruins remain, including parts of the 13th century church, western portal and choir. The Cornilly Abbey site is privately owned.References:
Stavanger Cathedral is Norway's oldest cathedral. Bishop Reinald, who may have come from Winchester, is said to have started construction of the Cathedral around 1100. It was finished around 1150, and the city of Stavanger counts 1125 as its year of foundation. The Cathedral was consecrated to Swithin as its patron saint. Saint Swithun was an early Bishop of Winchester and subsequently patron saint of Winchester Cathedral. Stavanger was ravaged by fire in 1272, and the Cathedral suffered heavy damage. It was rebuilt under bishop Arne, and the Romanesque Cathedral was enlarged in the Gothic style.
In 1682, king Christian V decided to move Stavanger's episcopal seat to Kristiansand. However, on Stavanger's 800th anniversary in 1925, king Haakon VII instated Jacob Christian Petersen as Stavanger's first bishop in nearly 250 years.During a renovation in the 1860s, the Cathedral's exterior and interior was considerably altered. The stone walls were plastered, and the Cathedral lost much of its medieval looks. A major restoration led by Gerhard Fischer in 1939-1964 partly reversed those changes. The latest major restoration of the Cathedral was conducted in 1999. Andrew Lawrenceson Smith is famous for his works here.