I don't know whether there was a connection to Jane Archibald - Carol will be able to tell you when she gets back.
When I was researching the Belfast, Andreas, Radcliffe branch, I looked up Lezayre parish records for the Jane KEIG als ARCHIBALD who married another Thomas Radcliffe. This is from my Andreas Belfast RADCLIFFE family file:
Eldest son of Thomas RADCLIFFE (1764-1838) & Jane LACE (1768-1848) bapt Andreas:

1. Thomas RADCLIFFE bapt.31 July 1803 married [1] Lezayre 2 Apr.1825 Isabella ANDERSON (1802-1857),
married [2] Lezayre 5 Oct.1861 Jane KEIG, widow, als ARCHIBALD.
Jane’s father was Charles Archibald, a servant. Thomas 's father was Thomas Radcliffe tailor.
Jane Archibald had previously married William KEGG on 9 July 1837 in Lezayre, who d.1850. [Wills & MIs]
We have a lot more on this family, but don't think they are ones you are looking for?

Sue