https://en.wikipedia.org/wiki/Guillaume_de_l%27H%C3%B4pital#/media/File:L'Hospital_-_Analyse_des_infiniment_petits_pour_l'intelligence_des_lignes_courbes,_1715_

https://en.wikipedia.org/wiki/Guillaume_de_l%27H%C3%B4pital#/media/File:L'Hospital_-_Analyse_des_infiniment_petits_pour_l'intelligence_des_lignes_courbes,_1715_-_1425244.jpg https://en.wikipedia.org/wiki/Guillaume_de_l%27H%C3%B4pital#... Though it seems people write it both ways (it is pronounced without the S though) > In the 17th and 18th centuries, the name was commonly spelled "l'Hospital", and he himself spelled his name that way. However, French spellings have been altered