That's pretty much what they are. Just reg'd with the verband in Germany. They have a strict stud book system and have a lot of testing. A friend describes them as "old blood" though I don't know if there's any validity to that. I tell my hubby it means idiot - he's an awesome hunter but he's kind of dense lol. We bought Dell because his parents are both master hunters and he is what history said he should be. Even being reg'd DKV he can be crossed with an AKC shorthair female and pups can be reg'd AKC.
Very cool that your dad & granddad raised & trained bird dogs. My dad is a dog guy too. When I was younger he raised rotties and did schutzhund/s&r/drug sniff & seizure training. Now he trains upland bird dogs and every once in awhile a duck dog. He has a Drathaar.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.