1054, the Great Schism, in which the Western (Roman Catholic) and Eastern Orthodox churches separated from each other. After a number of earlier such schisms, the breach was later repaired, but this one continues nearly 1000 years later.
... Stabiæ, where he landed, and took up his abode with Pomponianus, a friend.
Meanwhile, flames appeared to issue from several parts of the mountain with great violence. ...