Thank-you so much for all your help with this, although we do not have a final answer as yet, I am extremley happy with what we have found so far.
I am thinking the second Ann is most likely to be Johns mother, especially now I have discovered the Fletcher name being repeated with Johns grandson Jack Fletcher Burchell. Jacks father James is also a shoe-maker.
If it had not been for your help in finding the Fletcher name included in the Baptism records of Johns children, I would never have found the connection with Ann Burchell, the housekeeper to John Fletcher.
I will now do as you suggest, buy a birth document for one of the children, and fingers-crossed it will give new leads. I will post as soon as I know more.
Once again my many thanks to you, you are all gems!!
With best wishes from WA,
Carol Ann