The concept of an academic family tree rears its head every so often. I started constructing mine a few months ago but never finished the post. The concept is that your academic parent (they might all be male but I see no reason to specify ‘father’), is the person you did your PhD for. If you had a jointly supervised PhD, the supervisor making the largest contribution would count. Obviously this starts with me and works back in time.
Justus von Liebig, 1822, Erlangen [which is usually the point where most chemists stop, as this is one of earliest recognisable chemists. Liebig is also a branch point where the family tree diverges. The remaining names are listed below in short order.