I ask at Welp, and was told that they came from Privett. Privett told me, I think it was the owner at Privett, that he considered them his line. He said he had been collecting and breeding them for a number of years.......stanThanks. After considerable research, I have not been able to find out where Welp got their birds, but it is possible that they might have come from Sam Brush's line.