Hi Sooty
According to 1871 William is 6 (1865) in South Shields Durham and Mary is 1 born in Sheffield, Yorkshire.
Here are their birth registrations:
William CLAYPOLE
Mar quarter 1865
South Shileds Durham
vol 10A p 607
Mary Elizabeth CLAYPOLE
Mar q 1870
Sheffield, South Yorkshire
Vol 9c p 481
deb
Sooty .... just seen your post ...bradford ?