If someone wants to know whose line(s) my birds originated from, I will tell them. As far as I'm concerned, unless you bought your stock directly from the "known" breeder in question, they are no longer their birds. Once you've bred those birds, unless you keep a closed flock specifically breeding as the original breeder did, then those are your birds/your lines. I hate it when I see all the name droppers in auctions and especially on ebay! When and if, I ever sell birds for breeding/show, they will be my kudos or my mistakes, no one else's.