A few questions which may hep us find him (some already asked by Carole

:
William Dawson is named as the father on a marriage certficate. What is the grooms name, age and occupation?
What is William Dawson's occupation?
Where did the couple marry?
Do the witnesses have the surname Dawson, and if so what are their first names?
Can you post the details of your ancestor in the 1841 census? Do you have him in any other census and if so can you post reference numbers if you have them?
I do know that Yorkshire is a big place and that Dawson is a common name in the area, so every little bit of information we can gather, may help us find the right William.
People may have travelled for christening or marriage, though most would probably have kept it local. Marriages usually took place in the bride's parish which could be further afield than where the couple lived.