I recently attended an excellent lecture on researching Scottish family history given by Graham Jaunay . He is an Adelaide genealogist and what he doesn’t know ain’t worth knowing, as they say. Amongst the huge amount of information he gave us, there was a little pearl of wisdom re the 1841 censuses – that is, in those censuses, if you weren’t at home when the census man called, you weren’t counted at all. This explains why I have been unable to find various people eg James Hooker born 1821.