When you say you couldnt find a marriage . . . . . . I have just looked at the index and there are pages and pages of William H Norris. How do you know none of them arent him?
Did you know for sure he never married?
Who was the informant on the death cert?
IF he owned the property, I am surprised that he left no will. But if he didnt leqave a will, then I would have thought there would be record of Letters of Administration being granted to someone, in order for them to deal with the estate.
But you say you have already had a search done at the Probate registry?