Trial of Laud. The Long Parliament of 1640 accused Laud of treason and, in the Grand Remonstrance of 1641, called for his imprisonment.] Laud was imprisoned in the Tower of London. Parliament took up the issue and eventually passed a bill of attainder, under which Laud was beheaded on Tower Hill on 10 January 1645, notwithstanding being granted a royal pardon.