Good possibility. Thanks Frances.

The 1799 Lonan Episc will for Thomas CLAGUE mentions son William CLAGUE, Dau Anne wife of Thomas KNEALE, Dau Margret wife of Philip CALLISTER, Dau-in-law Margaret CLAGUE als SCARFF, wife Jane CLAGUE house in Douglas, etc.
The dau-in-law Margaret CLAGUE als SCARFF would just have become John GELLING's wife but perhaps the will was written before.

I have 3 wives for Thomas CLAGUE, but am not sure about the first one now that I look at it.
1. Anne BODDAUGH m 1742, son William b 1744. William would have had to have died if this is the same Thomas Clague.
2. Anne KILLEY m 1747/8, children Thomas 1751, William 1756-1831, Margaret 1760, Ann 1764, and unknown b 1767. I just checked Brian Lawson's site and wife Anne died in 1769, so that fits with the next marriage in 1770 for Jane
3. Jane . Son Thomas b 1772. Jane died in 1804 aged 73 according to MI (Brian Lawson's site)