Hi John A very interesting problem!! Just a thought, when I was going through the NSW BDM for my WHEATLEYs I found 12 children with the right Father and Mother. However on further checking I noticed that half were born in Redfern or there abouts and the others in the North Sydney area. As my mob came from North Sydney I concluded that I was looking at two entirely different families. Any chance that you are having the same problem?? Gary in Sydney