Together, Dirichlet (line 1) and Ohm (line 3) begat
- Rudolf Otto Sigismund Lipschitz (Berlin, 1853).
Lipschitz and Plücker (line 2) together begat
- Christian Felix Klein (Bonn, 1868) begat
- Carl Louis Ferdinand Lindemann (Erlangen-Nürnberg, 1873) begat
- Arnold Johannes Wilhelm Sommerfeld (Königsberg, 1891) begat
- Ernst Adolph Guillemin2 (München, 1926) begat
- Samuel J. Mason (MIT, 1952), who with Morris Halle (Harvard, 1955 - though he studied with Roman Jakobson at Columbia prior to his PhD) begat
- Francis Fan Lee (MIT, 1966; also a Hertz fellow) begat
- Jonathan Allen (MIT, 1968) begat
- Mitchell Marcus3 (MIT, 1977) begat
- Jason Eisner (U. Penn, 2001) begat
- Noah Smith (JHU, 2006).
1Amazingly, Poisson is my most recent common ancestor with my colleague William Cohen (see his genealogy here).
2Guillemin also begat Robert Mario Fano (MIT, 1947), who begat
the famous Frederick Jelinek (MIT, 1962).
3Marcus "begat" some other people I've worked with, including David Yarowsky (on my committee), Dan Melamed, and Eric Brill.