` :Limerick founded 812 AD Wterford founded 914 AD. Please read it's for your own good; The city dates from 812 which is the earliest provable settlement ; however, history suggests the presence of earlier settlements in the area surrounding King's Island, the island at the historical city centre. Antiquity's map-maker, Ptolemy, produced in 150 the earliest map of Ireland, showing a place called ``Regia`` at the same site as King's Island. History also records an important battle involving Cormac mac Airt in 221 and a visit by St. Patrick in 434 to baptise a Eóganachta king, Carthann the Fair. Saint Munchin, the first bishop of Limerick died in 652, indicating the city was a place of some note. In 812 the Vikings sailed up the Shannon and pillaged the city, burned the monastery of Mungret but were forced to flee when the Irish attacked and killed many of their number.[`