All the prisoners were condemned, first De Groot, then Hoogerbeets, then Oldenbarneveldt.

The trials were concluded on May 1, but it was resolved to defer the sentences until after the close of the National Synod, which had been meeting at Dordrecht.

This took place on May 9.
Meanwhile strong and influential efforts were made for leniency.

The French ambassador, Aubrey du Maurier, during the trial did his utmost to secure fair treatment for the Advocate; and a special envoy, Chatillon, was sent from Paris to express the French king's firm belief in the aged statesman's integrity and patriotism based on an intimate knowledge of all the diplomatic proceedings during and after the negotiations for the Truce.

But these representations had no effect and were indeed resented.
Equally unfruitful were the efforts made by Louise de Coligny to soften the severity of her step-son's attitude.