[Blennos]

A rough translation would be:

Also this family today, great Constantine, a most noble one, has benefited and prospered through you...

The important thing is that the caluse "per te aucta" is used regularly in Latin to mean "prospered through you" and pften addrseed to the ruler (or to a deity).

[demoRat watcher]

Don't forget the suffix -am also means "towards this City/place. It could be "to Cola" or "to Col" or "to a collar (in the geographical sense)". There are a lot of mountains in France that have the word Col in their name.