I was looking through this neat math book I had when I was younger that listed the greatest mathematicians of history. I'm talking old, it's kind of funny because I liked mathematicians when I was younger because my favorite character on Jurassic Park was a mathematician and that's why I asked for the book, heh. But, I noticed that almost every mathematician listed was born before April. Bernoulli - Feb Erdos (not in the book, but I like him.) - March Euler - April Grothendieck - March Gauss - April Newton - January Galileo - Feb Lagrange - Jan Hilbert - Jan Poincare - April Hamming - Feb On, and on!