Donna, there is no such place as "Castletown, Malew, Maughold". Maughold is a different parish, and not even adjoining.

The Maughold parish register has a baptism for George Illegitimate son of William Quayle & Esther Kermod bapt 10 Jan 1808.
The same couple had another Illegitimate son Claudius bapt 19 Feb 1804 (not "b.1/11/1835").
Although recorded as illegitimate they would have been known by their father's surname as was the custom in the IoM.

Haven't they (and Callow connections) been discussed several times before on this BB?
Yes, www.isle-of-man.com/cgi-bin/interests/genealogy/bulletin/index.pl?noframes;read=509306

Tom Corteen originally gave you their accurate dates on this thread:
www.isle-of-man.com/cgi-bin/interests/genealogy/bulletin/index.pl?noframes;read=9276

Tim Davis made more suggestions a couple of years later:
www.isle-of-man.com/cgi-bin/interests/genealogy/bulletin/index.pl?noframes;read=16475

I made further suggestions:
www.isle-of-man.com/cgi-bin/interests/genealogy/bulletin/index.pl?noframes;read=498823

And this year:
www.isle-of-man.com/cgi-bin/interests/genealogy/bulletin/index.pl?noframes;read=538673

Sue