Hi Tempsford
Been ruminating on this one for a few days!
I don't suppose there's a Settlement Examination along with the Removal Order in Swavesey, which would explain why he was removed to Turvey? Turvey would have been been his last parish of legal settlement, which could have been his birthplace, or it may have been that he had worked there for a year and had acquired settlement that way, and was born elsewhere.
I've been looking again at George Pains in Turvey - there was George baptised 1746, son of George, so that's two Georges. There are burials in Turvey of George Pains in 1784 and 1803, which may have been father and son. But there were also two more Georges living in, and born in, Turvey in the early censuses, one born c1792 a tailor, and another born c1785 a grocer (and he had a son George born c1828 whose baptism is on the IGI). But neither of the Georges in the censuses appears to have been baptised, and checking on the BLARS site, George the grocer seems to have been involved, probably as a trustee, in the leasing of land on which Turvey Congregational church was to be built in 1829. So I wonder if they came from non conformist stock in the village, and with so many Georges it's quite likely that your George was given the family name. But who was his father??? This appears to have been the only Pain family in Turvey, and all the sons seem to have lived and died in the village, so the only possibilty timewise is if George b 1746 married young and immediately had a son George say 1765, and your George's death was overstated by 5 years, which wouldn't have been too unusual. But of course this is highly speculative! Did either of the older Georges leave a will?
Is there any evidence of your George being non-conformist in Cambs?
I have non-conformists in Southill, and it's all but impossible to trace them with no baptisms. You know they were in the village at the start of the non conformist era, and they were still there in the late 1700s from censuses, but what happened in between is a mystery!
David