I'm going to say most likely not.
In the Chrono Cross timeline, my understanding is that the outside world (Guardia, Porre, Choras, Medina, etc.) didn't discover El Nido until around 900 AD. This is because El Nido is surrounded by wall-like and inpenetrable mountain/coral barrier of sorts, the only entrance/exit to El Nido a small slipstream of intense ocean currents.
Seeing that Porre discovered El Nido circa 900 AD and obtained Elements and their powers...
Anywho, I was getting off on a tangent. So unless Frog was 325 (estimate) years old and founded the Acacia Dragoons, most likely not.
But then again, you never know for sure until we get another Chrono game.