[Margaret Pilkington]

You are right Retlaw about the discrepancies in the recording of things.
Another thing that sometimes trips you up is that someone who you think might belong on your tree pops up somewhere like Ealing.
Now back (early 1800's) most people stayed with a couple of miles of where they were born.
But, it is crazy to discount these possibilities until you have done further research.
One of my rellies lurked in the 'shoebox' for ages....until I found an early census with him on it, then a later one with his occupation as 'servant'...so he had moved away from his birthplace to find work...but later returned, married, but was still itinerant, because he was a commercial traveller....so again, he and his family popped up in Warwickshire, Lincolnshire and Yorkshire.

Tracing your ancestors is definitely a pursuit that COULD make you insane...it certainly turns my brain to porridge.