In the early 1370s, Carrouges IV married Jeanne de Tilly, a daughter of the Lord of Chambois whose dowry included lands and rents vital to Carrouges' ambition of expanding his family estates. Shortly after their wedding Jeanne gave birth to a son, whose godfather was a neighbour and close friend of de Carrouges, Squire Jacques Le Gris. In 1377, Pierre d'Alençon inherited his brother Robert's county of Perche and with it the castle of Bellême. In addition, he gained the fealty of his brother's vassals, including the Carrouges father and son as well as Jacques Le Gris. The younger Carrouges and Le Gris soon joined the court circle of the Count, centered around the town of Argentan.