John Muncaster + wife Ruth Hellon/Helen are in Peel by 1803 but no on-Island marriage found - they are not in the 1816 Peel or German 'censuses' - there is a baptism of a son Wm to John Moncaster + Ruth noted in Lonan 1809 with the next baptism I have is that of son James to a John Mancaster + Ruth in German 18151126 but with a burial of an unnamed son to John in German 18180222 - I've always wondered if James later adopted possibly a 2nd name, the name Isaac - father John is I think buried German 18341221 and Ruth Braddan 18370228 age 67.
I think John was probably related to the the Isaac Muncaster bur German 18310724 age 49