[nika]

The official transition from Greek to Latin liturgy took place in the reign of Pope Damasus (366-384 AD). Take a look at Patrology by Johannes Quasten, Volume II, page 154. Reprinted by Christian Classics TM 1983.

[ninenot]

Thanks for your cite. But your original post said "several centuries," and I took that to mean "several," not "a few."

[ultima ratio]

There is fresh evidence that Latin, not Greek, was used in the earliest days by Roman Christians. I will try to dig up some of the scholarship.