Parisian
While looking up the possessive form of James, I came across this example at GrammarHow.
I’ve heard good thing [sic] about Paris’s food. Or, I’ve heard good things about Paris’ food.
Martin, Is it James’ or James’s? Here’s the correct possessive form of James, GrammarHow
Sorry, Martin, I would say I've heard good things about Parisian food
, although not of Paris as a whole. As a hole, yes; as a whole, no.
I guess Gary Moore—actually Phil Lynott, because he wrote the lyrics—was referring to a woman from Paris, or a cigarette, in the title of Parisienne Walkways. Otherwise, it would've been Parisian Walkways.
In the case of a proper name, such as James, the possessive form is indicated with an apostrophe either with or without a trailing s
. Both James' and James's are correct, although the latter is preferred in British English as it's less ambiguous. Just so's y'know.