The Académie had its origins in an informal literary group deriving from the salons held at the Hôtel de Rambouillet during the late 1620s and early 1630s. The group began meeting at Valentin Conrart's house, seeking informality. There were then nine members. Cardinal Richelieu, the chief minister of France, made himself protector of the group, and in anticipation of the formal creation of the academy, new members were appointed in 1634. On 22 February 1635, at Richelieu's urging, King Louis XIII granted letters patent formally establishing the council; according to the letters patent registered at the Parlement de Paris on 10 July 1637, the Académie Française was "to labor with all the care and diligence possible, to give exact rules to our language, to render it capable of treating the arts and sciences". The Académie Française has remained responsible for the regulation of French grammar, spelling, and literature.