House of Borgia
"On the morning of the 15th of August, 1534, in the chapel of church of Saint Peter, at Montmartre, Loyola and his six companions, of whom only one was a priest, met and took upon themselves the solemn vows of their lifelong work." Subsequently, they were to be joined by Francis Borgia, a member of the House of Borgia, who was the main aide to Emperor Charles V, and other nobles.