Hi, and thanks.
The problem is that there are so many people with the same few names, as I raised on
another thread recently. So inevitably there are many people who MIGHT be the ones I'm looking for, but difficult to distinguish them.
So I've looked at the 1851 & 1861 censuses without finding anything definitive (so far - every time I search I seem to find someone new!). But the most likely marriage of a Nefyn couple was in 1849, 2 years after he was apparently born. (Which may explain why he called himself by both his parents' surnames - John Griffith Jones.) But he could have been born then, to the same or a different father, so I need to search for John Jones as well as John Griffith.
So while I will keep searching, knowing of "Navan" ever did refer to Carnarvon, or never did, would help.