the 1745 deed SSS May 1745 #54 - dated 7 Feb 1742/3;Nicholas Kelly +wife Margt als Lewney settle on son Thomas ...
thus you have a spouse - Marown marr reg is deficient (1733 + later can be mostly reconstructed from Bishop's transcripts) however you are lucky they married in Braddan 17090117 where Nich noted as Kk Marown;
It's his parents that seem to be the problem - my own suspicion is Wm Kelly + Cath Creer but can't back this up (tho Wm = cath did take a mortgage in 1699 with Jo Curghy(braddan)