Mathematician:Guillaume de l'Hôpital

Shortened version of his full name and title: Guillaume-François-Antoine Marquis de l'Hôpital, Marquis de Sainte-Mesme, Comte d'Entremont and Seigneur d'Ouques-la-Chaise.

French mathematician best known for L'Hôpital's Rule, although this was in fact discovered by Johann Bernoulli. His name is alternatively rendered l'Hospital, which was how he himself rendered it -- however, the French language changed and the silent s was changed to a circumflex.

Nationality
French

History

 * Born: 1661 in Paris, France (precise date uncertain).
 * Died: 2 Feb 1704 in Paris, France.

Theorems

 * L'Hôpital's Rule

Books and Papers

 * 1696: L'Analyse des Infiniment Petits pour l'Intelligence des Lignes Courbes (considered to be the first textbook on calculus)
 * 1707: Traité anlytique des sections coniques