Progress of the Ridolfi Plot
4. Philip instructed the Duke of Alba to prepare 10,000 troops to send across the English Channel in support of the Revolt
5. Sir William Cecil discovered the plot and by Autumn 1571, was able to prove that Norfolk was guilty of high treason (plotting against Elizabeth). Ridolfi remained abroad and never returned to England
6. When parliament reconvened in May 1572, it demanded the execution of Norfolk and Mary QoS. Elizabeth signed Norfolk's death warrant leading to his execution. Yet she was reluctant to punish Mary, and even refused to remove her from the succession (she had to be careful as executing Mary would further anger English Catholics and possibly unite France and Spain against)