Betty I was noting with interest your 1851 census for Halifax listing Sarah Ann gaukroger, 12 in 1851. I am loing for a Sarah born about 1836 in Morley. 1839 is close, do you know if Morley is near Halifax. Or do you have aby more info on Sarah? I will keep an eye out for Mary Ann.
Ps do you have the film # for the 1851 Halifax census?