There is no marriage in 1727 for Margaret Christian according to Tom Corteen's transcripts from the original Maughold parish register.
The period to which you refer had only partial entries remaining:
John Allen / Jane Corlett 9 Oct 1727 in Kk Lonon Church
__ __ / Margaret Cow__ 14 Oct 1727
__ Corkill / Elizabeth Corkil 14 Oct 1727
William Cashin / Ester Kneen 14 ___ 1727
__ Kerruish / Elizabeth Corlett 1727
__ __ / Joney Kerruish Nov 1727
__ Stoil / Jane Cattin 7 Nov 1727
____lo Clague / Ann Stoil Nov 1727
William Kerruish / Catherine Curghey 12 Dec 1727

The closest was Daniell Callow & Margaret Christian 9 Feb 1713/14.

Sue