I have to keep myself from the giggles here, but I have a feeling we're looking at a deliberate, non-humorous real person's name, allowed in our time a bit of jocular reference because of natural linguistic and expression-drift over the last 280 years. 'Supply' could be a contraction of a longer name of the era it was native to (the first half of the 18th Century), and not referring to 'supplying' something. And 'Clap' I don't think suggested, er, unpleasant venereal disease in those days or was named informally thus, nor would it be considered calling someone 'clapping their hands' Clap (say like 'Hap' or 'Happy' rather than Harold or Henry). Put 'em together through the informal lingua franca of today...and here is unintentional name humour. ^_^

-2Paw.

FWIW the surname is a misspelling of the family name Clapp. Still.

That makes a lot more sense, in that case. Danke for the posting-in, GiC! I think I still might be right about 'Supply', like 'Happy Hogan's RL unmodified first name; but as you've confirmed about C'lap/Clapp', it might also be a mispelling in the carved inscription. I do sustain that nearly three hundred years of linguistic, syntactic and slang-drift can make Supply's name look a bit humourous by modern standards, but I have no suspicion that it was anything out of the ordinary when he and his pioneering contemporaries lived on this continent.

-2Paw.

EDIT: Oh, that's neat. Pastor Clapp passed on almost exactly 230 years before the day I was born (December 27th, 1977). Given what a winter can do to an agrarian family before the age of modern medicine, I don't expect his death was not encouraged (if not caused) by the icy New England winter of his day and today.