Help with convincing my daughter-?

I met Old Nick yestermonth- a nice young fellow, clean shaven, smartly dress- and he wished my daughters hand in marriage. Now, I am a caring father, and I only want what is best for my daughter, and a man as rich as he- what more can she possibly want. I found a nice Church with a nice Father, a nice cake and all that, but my daughter, for reasons unknown to me, refuses to wed this fine Gentleman. How can I possibly convince her to marry him?