I guess she could have married [1] John Radcliffe of the Ballakelly family [who died 1785], and then married Thomas Radcliffe bapt. Andreas 2 Feb.1736/37 s/o Philip Radcliffe & Joney Teare. Either Thomas - this one, or John's brother - would fit the dates on the MI etc.
They were both younger sons, and the wills which mention her husband could refer to either Thomas, as do the Skinner wills [relatives of Thomas's first wife Margaret Skinner].
Let's hope that Rev.W.T.Radcliffe knew who his grandparents were and wrote about them somewhere!
Sue