Some Saxons already lived along the Saxon shore of Gaul as Roman foederati.[citation needed] They can be traced in documents, but also in archeology and in toponymy. The Notitia Dignitatum mentions the Tribunus cohortis primae novae Armoricanae, Grannona in litore Saxonico. The location of Grannona is uncertain and was identified by the historians and toponymists at different places: mainly with the town known today as Granville (in Normandy) or nearby.