Hiya Cathryn and welcome to Rootschat ...do you know where Matilda was born ?
notice this says DAUGHTER ??...could Matty Holt be Matilda ? and Nanny Holt be Jane ?
Baptism: 3 Nov 1805 St Chad, Rochdale, Lancashire, England
Matty Holt - Daughter of John Holt & Betty
Abode: Yorkshire St.
Occupation: Weavr.
Matilda Stirrup buried 28th May 1846 ...the age 40 fits perfect with Matty Holt ?
Baptism: 30 Oct 1803 St Chad, Rochdale, Lancashire, England
Nanny Holt - Daughter of John Holt & Betty, his wife
Abode: Yorkshire St.
Occupation: Weaver
frankly , these were the only possibles I could find - like you ,I couldn`t find a baptism for Matilda Holt in the right timeframe ...so i wondered about "Matty " ?
probably wrong - but maybe worth looking in to ?