I have a little bit of Clitheroe DEWHURST family too:
William Bolton Dewhurst was born March 1800 in Blackburn He married Jane Cookson in 1821 in St. Mary, Blackburn. Children were: Mary Jane in 1821 in Blackburn William Bolton in 1823 in Blackburn in later years this William Bolton Dewhurst was a watchmaker living at Castle St in Clitheroe The family then moved to Clitheroe and the following children were born there. Henry Edward in 1828 in Clitheroe Elizabeth in 1830 in Clitheroe
I don't have information coming forward, but if anyone ties into any of these, I can offer info about the ancestors.