The baron of Vaud had to decline the office on account of a conflict of interests, since his eldest daughter Catherine had just married Azzone Visconti, lord of Milan.
[4] Louis and his immediate family were present on 12 January 1334 when Amadeus, future Count of Savoy, was baptised by the Bishop of Maurienne in the unfinished Sainte-Chapelle of the castle at Chambéry.
[4] In 1339 Louis's only son was killed at the Battle of Laupen, and his son-in-law Azzo also died, leaving his daughter Catherine as a widow and a potential heiress.
Finding the French in retreat, and without awaiting order, Louis immediately set out in the direction of the main English army and succeeded in getting to the town of Montreuil first, where he was able to deny entrance to the marshals of the king of England and garrison the walls and towers with his own men.
[8] In 1343 Louis was tasked with presenting Savoyard fears about the agreed upon sale of the Dauphiné to Philip, Duke of Orléans, a younger son of the French king, to the chancellor of France.
Nothing seems to have come of Louis's diplomacy, but he and fellow regent Amadeus III had been reconciled to the plan by January 1344, when they agreed to a marriage between their youthful charge and Joan, a daughter of Peter I, Duke of Bourbon, and thus a grand-niece of the French king.
When the reigning dauphin, Humbert II, returned from his Smyrniote crusade a widower in the spring, Pope Clement VI, who formerly favoured the French, encouraged him to remarry and sire an heir.