Bahee's will would probably help?
CORKILL, Bahee 1815 Maughold A 85 0106240
I don't think I found a transcript or summary anywhere, but have rather lost track.
There is a small amount about her at: www.iomfhs.im/lawsons/LawsonBMD/manx_law/v2/direct.pdf
but her parents' wills are too early to help with her children.
www.iomfhs.im/lawsons/LawsonBMD/twill/1777_000.html
www.iomfhs.im/lawsons/LawsonBMD/twill/1762_002.html
Sue