Decameron

There was in the kingdom of France a gentleman called Isnard, Count of Roussillon, who, for that he was scant of health, still entertained about his person a physician, by name Master Gerard de Narbonne. The said count had one little son, and no more, hight Bertrand, who was exceeding handsome and agreeable, and with him other children of his own age were brought up. Among these latter was a daughter of the aforesaid physician, by name Gillette, who vowed to the said Bertrand an infinite love and fervent more than pertained unto her tender years.