Seniores and Iuniores (again)

[Nathan Ross]

In this case the name Ioviani would come from the parent legion and not from the Emperor responsible for the draft.

Ah yes, quite so.

I was actually thinking, for some reason, of the Auxilia Palatina unit called the Iovii Iuniores. The problem here is quite different, as it suggests that auxilia units were being raised by Diocletian!

But that does not affect your current thinking.