Roman Legion in late Antiquity

[Nathan Ross]

we accept that the palatine Batavi date to the early 4th c. or even earlier, there are not yet Laeti who were settled in the old Batavi civitas.

At the risk of veering off into a different debate, literary evidence (i.e. the panegyrics) suggest that the old Batavian country had been occupied by 'Franks' in the late third century (Pan 7.7), and these same people were then defeated by Constantius and resettled elsewhere (Pan 6.5.3: "Not content with having conquered, he transported these peoples themselves into Roman territory..."). Who these 'Franks' might have been is unknown, but as they had been living in Batavia, surely troops raised from their settled descendents might viably be called Batavi?

According to chapter 7 the Pangeyrici Latini Constantius Chlorus resettled a large number of them in Flanders and Kent, along the Rhing down to about Tournai and Arras

There's only one reference to Frisii in the panegyrics - 8.9.3 has them ploughing Gaul alongside the Chamavi. Nothing abut them in Britain - but this is for the 'terp tritzum' thread!