Thanks guys!
That was the impression I had, Eileen, that this might have been a slightly "grander" option than the parish church, and that's why I wondered whether there was a class factor. This was 1875 of course so I think there would have been an incumbent in charge of officiating at weddings and other ceremonies.
The witnesses at the wedding didn't seem to be related to either spouse at all (the bride had older brothers, both labourers, one probably in India and the other probably in Lancashire, I figured out ages after finding this marriage, and the groom had a wealthy remarried mother but only younger siblings). They were possibly a married couple who were friends; I was never able to identify them and I forget their names now ... I have to figure out where I put all those $$$ worth of certificates before I learned how to scan things. So I did also wonder whether it might have been a bit of a Gretna Green kind of option for young elopers.
It was this marriage that was my first clue that my gr-grparent even had family, leaving me then to figure out who/what the heck they were and what their real name was, because it wasn't the one the bride used when she married.
I'm a little at sea with that info Paul - why copies would be with the College of Arms ...
Oops, Jennifer, sorry, I missed your message there. Yes, it took a long time, but I did figure out who the family were and I have them in 1851 and 1861, and this couple in 1881 ... after which they had one more child and the bride disappeared; the groom went bankrupt in 1883, travelled to Belgium with the three children in 1885 and showed up in 1891 with a faked name of his own and a spiffy new wife allegedly born in Canada (where there is no marriage that I've ever found), then the son went off to the Anglo-Boer War and I found him in the SA archives enquiring after his father's whereabouts in 1907 and found (too late) his medals being auctioned, and finally, a couple of years ago, I found a name in an online tree that proved my theories about the groom and the son correct: the bride's grx2 grandchild, born in SA, now in the US ... who had a fancified family story to tell about her grx2 grfather, the groom in this tale, but had never heard of the bride. Sigh.
The bride's father is described as a mining share dealer in censuses and in the late 1850s had a draft mining lease with a partner, in Cornwall, but I suspect the collapse of tin mining in Cornwall meant that never went ahead; he too went bankrupt in the late 1860s and then remarried while the bride's mother was still living, but then I've never found a marriage for the parents anyhow. The parents had multiple children whom they baptised somewhat randomly, the younger ones in a batch, one of the older ones a few years later, another of the older ones being baptised only in comtemplation of death after 1871. I suspect that at least the three youngest, my gr-grparent and the bride in this tale (and another who died in infancy) weren't really children of the named father ... and that's why I'm looking for anything that might prove or disprove the tale my gr-grparent told about who their "real" father was.