Hi, An area of town is called "St Peter's". Is "St Peter's bygone days" correct? I can't see what else it could be. Thanks, Frip.
If "St Peter's Bygone Days" is the whole extent of the title, change the emphasis, maybe: "St Peter's: Bygone Days"?
Surely if the name is already possessive, it doesn't need to be changed for a possessive context? Take off the top of my head the example word 'Chinese'. This is both a singular and plural word. You wouldn't say 'Chineses', so St.Peter's wouldn't change either, surely?
that's not the same thing at all, pc... yes, frip... to make sense, you'd have to make it a double possessive if you worded it that way, so you should word it differently... the colon suggestion is a good one, but i don't see why the addition of one tiny word ['of' only... 'the' is not needed'] would matter in a newsletter headline, which can be as long as you want to make it...
If you are constrained and must use the formulation, I would just go with St Peter's' No clue whether this might be regrded as technically incorrect, though I fancy you won't have many complaints.
that would be correct punctuation, but looks a bit awkward, so may confuse some readers... the best thing would be to avoid having to make the possessive possessive altogether, with better wording...