I have read with interest Kenny's recent articles on inbreeding families of fowl (in his particular reference it would be Bankiva Games). I have also looked back over similar articles I have written over the past decade that have appeared in different publication. I have also looked at my own breeding practices.
I then looked at the very old articles about from the breeders of the families of fowl we now have today.
The truth is what we do today with inbreeding those families and what the old timers did to 'make' those families are two totally different things. The old timers weren't interested in establishing families. They were interested in winning cockfights. To that end they bred their fowl. When beaten they often tried to purchase the cock that won that day to take home and breed to their hens. They didn't do this once or twice, but did it quite often. Now I'm not saying some didn't inbreed, but most practised outcrossing to an extreme. Then when they had a winning 'strain' (can you even call it that) they peddled them under some name they created themselves at pit-side. It was those who followed these winners that did the inbreeding which stabilized the strains for the most part.
Now here we are today telling folks that inbreeding with the method of the past to preserve these fowl for the future. There is truth in that statement. It's just not the 'whole truth.'