Gallia Christiana | ''Italia Gallica sive Gallia Cisalpina'' (Abraham Ortelius | Gallia christiana |
Clastidium (modern Casteggio), was a village of the Anamares, in Gallia Cispadana, on the Via Postumia, 5 miles east of Iria (modern Voghera) and 31 miles west of Placentia.