Barry Holstein and I once wasted some time figuring out our academic genealogy – i.e. tracing back the PhD advisors of our PhD advisors. Interestingly it goes back through some pretty big names, all the way to Bernoulli, who was self-taught. Here is the link to the genealogy tree. Of course this sets us up for the appropriate joke about how the standards have deteriorated in modern times. But nevertheless, this is an interesting – at least to us.
P.S. Continuing this family tree in the other direction, you can find a link to a listing of my PHD students here.