There is a Stephen Allen baptised Walton West in 1790 parents Stephen and Martha.
There is also a Rebecca Allen baptised 15 Aug 1806 parents William and Rebecca in Walton West. This is a baptism date and not necessarily a birth year.
I can find George Allen and Ann having several children but no Rebecca. Likewise Stephen and Martha but again no Rebecca.
Emeltom
Thanks for that Emltom, it's got me thinking now: I have seen some baptism records where the child's age is noted as being several years old - perhaps this is her situation?
I will have to look, or maybe even this is the possibility for now until further info comes to hand? Maybe she was born elsewhere & then got baptized when they moved into this parish??
I'll have to see if there are other children of William & Rebecca & where & when they were born - thanks!