The question became a personal one between the queen-mother and the minister; and commissioners were appointed to decide the difference.

Chancellor Duprat was the docile servant of Louise of Savoy and the enemy of Semblancay, whose authority in financial matters he envied; and he chose the commissioners from amongst the mushroom councillors he had lately brought into Parliament.
The question between the queen-mother and the superintendent led to nothing less than the trial of Semblancay.

The trial lasted five years, and, on the 9th of April, 1527, a decree of Parliament condemned Semblancay to the punishment of death and confiscation of all his property; not for the particular matter which had been the origin of the quarrel, but "as attained and convicted of larcenies, falsifications, abuses, malversations, and maladministration of the king's finances, without prejudice as to the debt claimed by the said my lady, the mother of the king." Semblancay, accordingly, was hanged on the gibbet of Montfaucon, on the 12th of August.

In spite of certain ambiguities which arose touching some acts of his administration and some details of his trial, public feeling was generally and very strongly in his favor.

He was an old and faithful servant of the crown; and Francis I.had for a long time called him "his father." He was evidently the victim of the queen-mother's greed and vengeance.