Roman Legion in late Antiquity

[Flavivs Aetivs]

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, in 297, where they persisted there from their characteristic "Terp Tritzum" pottery style throughout the 4th century and into the 5th century in where Frisiavones (Frixiavones) they are listed in the Notitia with the other British Units at Vindobala and Rudchester (this one is a Tombstone).

The foederati section of the Notitia was updated until 442 and the Batavi are not listed. Nor are Saxons or Frisians.

The Frisii return as the "Frisian Kingdom" beginning in 511, but these were actually a kingdom of Saxons and Angles, the Frisii had been absorbed by the Roman and then Merovingian supercultures by this point.

Fun fact: Genetic markers show the Frisii, Frisiavones, and Chauchi werein fact not of Germanic origin like the Batavii, Chatti, Gothones, etc were.