Neville needs a girl friend in Portland, OR

Neville is my Great Dane and I would really like one of his puppies. I love his personality and intelligence, and would like to have his prodigy. The female does not have to be a Great Dane, does not have to be registered (Neville is purebred, but not registered), but she does have to be big, like a mastiff, rottie, german shephard, etc. If you have a female and want to breed her for exceptional puppies, I am only asking for pick of the litter, and it would be the one and only time that Neville will be bred.