When Francis died and Anne married Charles VIII of France, Nicolas followed her to the royal court, where they remained close.

Guy XVI frequently corresponded with his brother-in-law, Anne de Montmorency to gain insight and favors at the royal court.

[2] Guy XVI maintained a large court of lesser nobles from throughout France and beyond.

His lands included Vitré, Lohéac, Montfort, Becherel, Quintin, and La Roche-Bernard.

At the tournament celebrating the arrival of Mary Tudor in Paris, he jousted over 40 times.