The best thing to do is ask this question on the profile and maybe the profile manager divulge the source for the parentage for you but from what I can gather so far, the two sources appear to be a private tree on ancestry ( which is really not a source ) and the World Family Tree Vol. 4, Ed. 1.Publication: Name: Release date: August 23, 1996. There be be sources attached to these trees if you inquire .