bloodline question

My cousin had some nice gamedogs back in the day. Supposedly a few of them were talked about in one of Stratton's books. Maybe some of you heard of them. Gibson's Bully, Gibson's Sheba, and Gibson's kegger. They were based of a dog called Big John from the Bullworker bloodline. He lived to be 17 yrs old. If noone has any info on any of these dogs, do you know where I can search for them or there bloodlines at? He also had a 112 lb corvino male. The biggest gamebred dog I've ever seen. Ripped!!

Gibson's Kegger
http://www.apbt.online-pedigrees.com/public/printPedigree.php?dog_id=27364

Gibson's Bully
http://www.apbt.online-pedigrees.com/public/printPedigree.php?dog_id=27368

Gibson's Sheba
http://www.apbt.online-pedigrees.com/public/printPedigree.php?dog_id=27365

I wouldnt call it the Bullworker bloodline.More like a Rascal/Mayfield/Red Baron.
Never heard of any of them mentioned in any of Strattons books.
And there hasnt been any pure Corvino dogs around for 30+ years.

yeah I dont know if it was pure corvino. I just remember them when I was younger and from what my cousin has told me. Bully was the son of kegger and sheba. I dont know much about them. I just remember they were some really nice looking dogs. Really smart also. I just wanted to know if anyone has ever heard of them.

And it was probably about 15 years ago when he had him.