RE the Londonderry census of 1831: The microfilms show more than just the index. I have found many GODFREYs and the information shows head of household, street and number, # of males, # of females, # of male servants, # of female servants, total # in household, # of catholics, # of Established Church (Church of Ireland), # of "Other Dissenters". Susi Godfrey