Please delete this thread. Even though I scanned up and down the main forum 3 times for a more appropriate section before posting this thread, I just now saw the correct section and will now post to there. Sorry.
If you can get the full pedigree information, you might want to contact Sally Wallis who maintains the pedigree website. In her personal database she does collect breeder information when available. So she may have at least the names of the breeders and may be able to give them to you.