Hi Derek, thanks for your reply.
I note the Witnesses at the marriage of William & Ann were Gilbert Measham & William Tunnycliff, both signed, as did William Measham.
I could not find the baptism for William in 1743 but I did find the following.
20 Jun 1743 Derby, St Michael, Derbyshire
Marryed William Measam & Anne Shepperd both of this parish and the town of Repton in the County of Derbyshire
Gilbert Measom son of William 15/11/1743 Derbyshire
Willm Measom Baptism 20 Sep 1745 Repton, Derbyshire. However when you view the OPR on Ancestry there is no baptism on that date, it might be the wrong image, not sure?
Colin