To cause loss of liberty or property by false witness was punished by the penalty the perjurer sought to bring upon another.
Starting his career as a perjurer, it is curious that he was singularly slow to suspect perjury in others; he was the most systematically betrayed of all English kings, because he was the least suspicious, and the most ready to buy off and to forgive rebels.
The council of Constance then deposed him, as a perjurer, an incurable schismatic and a heretic (26th July 1417), After struggling with the popes of Rome, Urban VI., Boniface IX., Innocent VII.