I traced my mathematical lineage back into the middle ages at

"The Mathematics Genealogy Project" at
http://www.genealogy.ams.org/

Look, Mom, I've got blue blood! ...and some inbreeding and black sheep in the family too.

Click HERE for the PDF file that the genealogy web site produced for me.

             *
             |
        Jacob Bernoulli                         *
             |                                  |
        Johann Bernoulli                     C. Siber
             |                                  |
          L. Euler                           C. Hausen 
             |                 *                |
        J. Lagrange            |             A. Kaestner
         /     \            von Langsdorf      |
S. Poisson     J.B.Fourier  /               J. Pfaff
         \     /           /                 /
    G. Dirichlet    M. Ohm     /--------- Carl F. Gauss
          \         /        C.Gerling     /           \
          R.Lipschitz        /         Friedrich Bessel \
              |          J.Plueker       /               |
        Felix Klein--------/        Heinrich Scherk  C.Guderman
          /         \                   /               /
C. Lindemann         \          Ernst Kummer     K. Weierstrass
     |                \                \              /              
David Hilbert          \               Hermann Schwarz
     |                  |                    |
Erhard Schmidt   Ludwig Bieberbach      Leopold Fejer
          \         /                       /
           Heinz Hopf              George Polya        *
                     \            /                    |
                      James Stoker   *       *   Arthur Cayley
                         /          /         \        |
                        |  Walter Ball     G.Darwin  A.Forsyth
                        |       |                \    /
                        |  E.W.Barnes   A.Love  E.Whittacker
                        |       |            \    /
                        |  John Littlewood  G.H.Hardy
                        |             \        /
                        |          Donald Spencer
                        |                /
                  Louis Nirenberg  Joseph J.Kohn
                            \          /
                          Norberto Kerzman
                                 |
                              S. Bell