Just found a Thomas Tooth, 27 DEC 1840 Blithfield, Stafford, England , son of Matthias Tooth and Frances on IGI.
Thomas is still with Aunt Mary Bond in 1871 census and lists birthplace as Newton, Staffs
google maps reveals this is .9 miles from Blithfield
I am becoming more convinced that Fanny is Frances, and likely the same one from 1811 that Lisa found.