Caroni is the county just south of Port-of-Spain. See map.

There's a town called Bonasse, and a Bonasse Village, but not a St Bonasse. Bonasse is a French word meaning good-natured, so St Bonasse seems unlikely. But it sounds like he's saying "san" without voicing the N, which is how the French pronounce "saint," and I can't think of anything else.

I probably got the lyrics from listening to the LP. The green one, with his picture on the front looking like a gay Dracula. Like this.

In thinking about it now, I wonder if "a ball" is actually "appalled." What the poor cooks are going to do, conscientiously I must say to you.