Biddulph: Gratuitous piece of useless information !
I am NOT researching this surname.
However, I have studied the BRADLEY marriages records for Wolverhampton (St Peter) for the 300 years from 1538 to 1838. In that period there were 165 such marriages. In 29 of those instances a John BIDDULPH was the second witness. On just one occasion a William BIDDULPH assumed that role. The surname appears on a number of other non-Bradley marriages.
Thought someone might like to know !