Question wasn't addressed to me, but I would say you  certainly need to go back to before Charlemagne, who wanted a more uniform liturgy (to help unify his empire) ... So the Holy Roman Empire had what was basically the papal liturgy at that time foisted on it.
In positive terms, there is Hippolytus ... Text unknown at the time of Trent, of course. But the periti at Vatican II were well aware of it and used it as a source for both the revised Mass and the revised rite of ordination of bishops.