According to Scituate Chronicles, by Ted Clarke, Squanto was a Christian, and probably a Catholic. He seems to have been a decent enough regular guy, but not notably pious.
More than once he was captured and sold as a slave. He crossed the Atlantic multiple times, and lived in England for years. Having gone back to America and been captured and sold into slavery again, around 1614 he was rescued in Gibraltar by Spanish monks who taught him about Christianity and baptized him.
Squanto did give the Pilgrims critical help with farming, and it’s not a exaggeration to say the colony likely would have failed without that help. He also seems to have used his position and knowledge to prey on the ignorance of the local native Americans, and tried to manipulate the Pilgrims into attacking a particular tribe. So, pretty much a man of his time, or our own.