No need to get worked up..
Most people on here yes are anti breeding especially if they arent shown
I find that hard to belive that your grandfather brought over the first
Staffie puppy though.
I think that if you have bred and your grandfather did bring the first Staffie
over then your knowlage should be great on the breed, and the genetics
of them. Because of course you wouldnt breed without knowing how
genetics work. And if you guys have owned a pup from each generation
(of people) then you should know the background of the grand parents etc
wich is what would have effected your dog.