Thank you so much ciderdrinker! That's super helpful - more detail on some of those baptisms than I'd found (esp James's occupation), and I'd not found that death record for him. I'd erroneously - though tentatively - come to the view that he was in the 1841 census but now a bricklayer (which felt unlikely tbh).
I guess Caroline might well have had to go into service after her dad died, or to live with relatives. Like you say, the wedding is still a mystery too.