The significant debts of Humbert II and the death of his son and heir led to the sale of his lordship to King Philip VI in 1349, by the terms of the treaty of Romans, negotiated by his protonotary, Amblard de Beaumont. A major condition was that the heir to the throne of France would be known as le Dauphin, which was the case from that time until the French Revolution; the first Dauphin de France was Philippe's grandson, the future Charles V of France. The title[6] also conferred an appanage on the region. Charles V spent nine months in his new territory.
Humbert's agreement further stipulated that Dauphiné would be exempted from many taxes (like the gabelle); this statute was the subject of much subsequent parliamentary debate at the regional level, as local leaders sought to defend this regional autonomy and privilege from the state's assaults.
What if instead Humbert II still dies Childless and not sold it to France there is a Chance for it to Join Savoy, how would a Savoy Dauphine effect Dauphine in the long term.