Saint Camillus de Lellis (1550-1614), former soldier, gambler, sinner, then revert, nurse, dedicated carer for the sick, and saint. Also a contemporary and a penitent of Saint Philip Neri.
Today also marks the anniversary of the storming of the Bastille prison (1789) and the beginning of the French Revolution, which helped form modern France, for better and for worse. More for the worse, one suspects.