The Ann baptised on 3rd December 1815 in Worcester has the father's occupation down as "labourer", which is more vague than shoemaker, but does not necessarily rule this baptism out as the correct one for your Ann.
Other children baptised to a Thomas and Mary (K)nott in the Worcester area within 20 years of this Ann include:
Elizabeth (1809) - Worcester St. Helen
Charlotte (1811) - Worcester St. Andrew
Elizabeth (1818) - Worcester St. Andrew
Also perhaps Mary Ann (1830) at Worcester All Saints, but the father is down as "porter" and there is a big gap.
Queenie
