Although his military service was primarily to the King of England, his reputation for chivalry and poetry was renowned throughout Europe.
When his father died in 1386, he returned to Savoy and inherited the lordship of Sainte-Croix, Grandcour, Cudrefin, Aubonne and Coppet.
He became a close advisor and ally of Bonne of Bourbon, the dowager countess of Savoy who ruled in the name of her son Amadeus VII, called the Red Count.
Accusations against him were renewed, however, and he was forced to engage in a judicial combat by the young count Amédée VIII.
[5] This steadfast love, faithful even to death, voiced over and over through his poetry, earned him the reputation of the most courtly lover in France.
[7] Kosta-Théfaine, Jean-François, Othon de Grandson, chevalier et poète, Éditions Paradigme, Medievalia, 2007