Interesting, Donna. I am also researching a Patrick Callister born about the same time, and he should be here in the 1841 census, probably close to the one you have just described:

Jur 2 9 41
Ballamoar, Jurby
Eleanor Callister 48, agricultural labourer (so, born c1793 - doubtful)
Eleanor, 12 (born c1829)
Henry,10 (born c1831)
Elizabeth,8 (born c1833)
Joseph, 5 (born c 1836)

but he isn't. My assumption is that he died between 1836 and 1841 and Brian Lawson lists a potential candidate on his website, but I haven't had chance to check yet.

It is a real shame there isn't an 1831 census!

James