I got my PhD in mathematics under supervision of Gerard Ben Arous at NYU in 2008.
So, my math genealogy is French-oriented.
According to Math Genealogy Project, it goes like this:
$ \uparrow $
$\uparrow$
Jacques Neveu | $\leftarrow$ Robert Fortet | $\leftarrow$ Maurice Fréchet |
$\uparrow$
Jacques Hadamard | $\leftarrow$ Émile Picard | $\leftarrow$ Gaston Darboux |
My PhD in Economics was written under supervision of Robert W. Rosenthal who was a mathematically trained economist and who worked in game theory. He taught me a lot about doing research.
On this side, my genealogy eventually goes to Germany.