He restored indeed the estates of all Robert's adherents; but was secretly determined, that noblemen so powerful and so ill affected, who had both inclination and ability to disturb his government, should not long remain unmolested in their present opulence and grandeur.

He began with the earl of Shrewsbury, why was watched for some time by spies, and then indicted on a charge, consisting of forty-five articles.

This turbulent nobleman, knowing his own guilt, as well as the prejudices of his judges and the power of his prosecutor, had recourse to aims for defence; but being soon suppressed by the activity and address of Henry, he was banished the kingdom, and his great estate was confiscated.

His ruin involved that of his two brothers, Arnulf de Montgomery, and Roger, earl of Lancaster.

Soon after followed the prosecution and condemnation of Robert de Pontefract and Robert de Mallet, who had distinguished themselves among Robert's adherents.