The earliest certain written record of a settlement at Ajaccio with a name ancestral to its name was the exhortation in Epistle 77 written in 601AD by Gregory the great to the Defensor Boniface, one of two known rectors of the early Corsican church, to tell him not to leave Aléria and Adjacium without bishops. There is no earlier use of the term and Adjacium is not an attested Latin word, which probably means that it is a Latinization of a word in some other language. The Ravenna Cosmography of about 700 AD cites Agiation, which sometimes is taken as evidence of a prior Greek city, as -ion appears to be a Greek ending. There is, however, no evidence at all of a Greek presence on the west coast and the Ionians at Aléria on the east coast had been expelled by the Etruscans long before Roman domination.