Brian, there was no PECKHAM marriage to anyone (not just Kneen) on the Maughold parish register, if that was what you were asking?

The Margaret Jane bapt on 23 Aug. 1847 in Ramsey had no father recorded. Her mother Isabella CORLETT was I believe the same Isabella Corlett who married Thomas Kneen in Maughold on 10 Oct 1847. Both were from Ramsey.

I'm guessing that Thomas Kneen was her father, and Margaret Jane would have been known as Kneen even though she was born a few weeks pre-marriage.

Perhaps someone would look up the 1851 census to confirm this.

Sue