This is my family tree. All info from, and links to, 
the
<a href="http://genealogy.math.ndsu.nodak.edu/">
Mathematics Genealogical Project.</a> Note that they've corrected (?)
some of the links, and I did too on Dec 1 2003.
<p>
I had two advisors, as did many of my (known) ancestors. 
<p>



<!-- name, date of thesis -->
<table>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=37047">
Allen Knutson 1996</a>
<tr><td align=center>


<table border>
<tr><td align=center>
<!-- first advisor -->

<table>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=26899">
Victor Guillemin 1962</a>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=10465">
Shlomo Sternberg 1957</a>
</a>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=35391">
Aurel Wintner 1928</a>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18343">
Leon Lichtenstein 1909</a>

<!-- name, date of thesis -->

<tr><td align=center>
<table border>
 <tr><td align=center>
 <table>
  <tr><td align=center>
  <!-- first advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=7487">
  Hermann Schwarz 1864</a>

  <!-- name, date of thesis -->

  <tr><td align=center>
  <table border>
   <tr><td align=center>
   <table>
    <tr><td align=center>
    <!-- first advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18331">
    Ernst Kummer 1831</a>
    <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=25484">
    Heinrich Scherk 1823</a>

    <!-- name, date of thesis -->

    <tr><td align=center>
    <table border>
     <tr><td align=center>
     <table>
      <tr><td align=center>
      <!-- first advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18603">
      Friedrich Bessel 1810</a>
      <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18231">
      Carl Friedrich Gauss 1799</a>
      <tr><td align=center>
      (continued elsewhere)
     </table>
 
     <td align=center>
     <table>
      <tr><td align=center>
      <!-- second advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=65162">
      Heinrich Brandes 1800</a>

      <!-- name, date of thesis -->

      <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=65161">
        G. Lichtenberg 1765</a>

      <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=35958">
        Abraham Kaestner 1739</a>
     (continued elsewhere)

      </table>
     </table>
    </table>

    <td align=center>
    <table>
     <tr><td align=center>
     <!-- second advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=7486">
     Karl Weierstrass 1854</a>
     <tr><td>
     (continued elsewhere)
    </table>
   </table>

  </table>

  <td align=center>
  <table>
   <tr><td align=center>
   <!-- second advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=9722">
   Friedrich Schottky 1875</a>

   <!-- name, date of thesis -->
   <tr><td align=center>
   <table border>
    <tr><td align=center>
    <table>
     <tr><td align=center>
     <!-- first advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=7486">
     Karl Weierstrass 1854</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=29458">
     Christoph Gudermann 1841</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18231">
     Carl Friedrich Gauss 1799</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18230">
     Johann Pfaff 1786</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=35958">
     Abraham Kaestner 1739</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=57670">
     Christian Hausen 1713</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=72669">
     Johann Christoph Wichmannshausen 1685</a>
     <tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=21235">
     Otto Mencken </a>

    </table>

    <td align=center>
    <table>
     <tr><td align=center>
     <!-- second advisor -->
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=49057">
     Hermann von Helmholtz</a>
    </table>
   </table>
  </table>
 </table>
</table>






</table>


<td align=center>
<table>
<!-- second advisor -->
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=25522">
Lisa Jeffrey 1991</a>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=30949">
Sir Michael Atiyah 1955</a>
<tr><td align=center>
<a href="http://genealogy.math.ndsu.nodak.edu/html/id.phtml?id=18583">
Sir William Hodge</a>
</table>


</table>




</table>
<a href="http://www.gps.caltech.edu/~sofia/">
My wife,</a> a geophysicist, also traces back to Helmholtz!