Pierre-Simon Laplace

Pierre-Simon, marquis de Laplace (23 March 1749 – 5 March 1827) was an influential French astronomer and mathematician.

Biography
Laplace was born in 1749, and became of the foremost mathematicians of France. Collaborating with Antoine Lavoisier, Laplace was able to show that water was a compound of oxygen and hydrogen.

In his five-volume work published in 1799, Celestial Mechanics, Laplace calculated the movements of the planets, and determined their form and influence on the tides. Laplace went on to receive the Legion of Honor, and also worked to restructure France's distinguished.

Reference

 * ''Assassin's Creed: Unity