Probably through the influence of his family, de Brosse was made chamberlain to the Dauphin, the future Charles VII.

In 1422 de Brosse’s father died, leaving his son his titles and estates.

He soon began growing short of money, however, due to work on the castle of Boussac and the cost of his army.

The French government was unable to compensate de Brosse for his service, being short on money itself.

De Brosse tried to avenge her by taking Rouen, however his plan failed, and he returned to Boussac.

Because of the great debts de Brosse had at the time of his death, his creditors threatened to have him excommunicated postmortem, and the dispersal of his mortal remains.

The king however, raised enough money to pay off the debts, and de Brosse’s body was left in the abbey at Prébenoît.