Gamier de Saint Yon was echevin of Paris in 1413 and 1419; Jean de Saint Yon, his brother, was valet de chambre of the dauphin Louis, son of King Charles VI.
Her success surpassing his expectations, his hopes took a higher flight, and through Lebel, valet de chambre of Louis XV., and the duc de Richelieu, he succeeded in installing her as mistress of the king.
Coming to the throne by the death of his father on the 25th of August 1270, Philip began his reign by falling entirely under the influence of Pierre de la Brosse, who had been surgeon and valet-de-chambre to his father, upon whom he lavished lands and honours, making him lord (sieur) of Langeais, Chatillonsur-Indre and Damville.