Hi Mark,
I noticed your post's slipped off Rootschat's "Home" page without getting a response. (It was still there, but at the foot of the page, when I started on this.) Displayed on the Board only, it may attract less attention so I thought I'd try and help out.
I'm unable to access censuses at the moment and you seem to have been down that road already, together with exploring marriage records in both the UK and Ireland. A fresh pair of eyes taking at look at those could be useful, so I hope someone else comes along and offers to do that. (Or can suggest other avenues to explore, as I do below.) My response should bump your post back to near the top of the Home page, increasing the chances of others replying to your post.
You mentioned a possible Scandinavian connection, maybe Norwegian. As I know nothing about Scandinavian family history resources, I turned to Auntie Google. That's often my first port of call when I need pointers - although posting on Rootschat is just as valid!
NB: The non-Anc**try/FS websites linked to below (the Scandinavian ones - second, fifth, eighth and ninth links) all appear to be in English; but it's possible their records may not be. The records held by Anc**try and any on FS may also not be in English. But there's always Google Translate and Rootschat to help out in that respect.
First, I googled "norwegian family history records". There were other options on the results page (and I only looked at the first page) but I picked these out, as they may be the best place to start:
https://www.ancestry.co.uk/search/places/europe/norway/https://www.arkivverket.no/en/find-your-ancestors/tracing-your-ancestryhttps://www.familysearch.org/wiki/en/Norway_GenealogyNext, I googled "swedish family history records". Again, there were other options and these are from just the first results page:
https://www.ancestry.co.uk/search/places/europe/sweden/https://www.arkivdigital.net/swedish-genealogyhttps://www.familysearch.org/wiki/en/Sweden_GenealogyFinally, I googled "danish family history records" and took these from the first page:
https://www.ancestry.co.uk/search/places/europe/denmark/https://www.sa.dk/en/services/records-registries/https://www.danishfamilysearch.com/https://www.familysearch.org/wiki/en/Denmark_GenealogyIf the none of the links above lead you to the answer you're seeking, you might wish to try googling "icelandic family history records" and "finnish family history records". Although not Scandinavian countries, Iceland and Finland have close ties with Scandinavia, as you may know, so could possibly have some similar family names.
Rgds,
theirchild