Elizabeth I. Tudor, Queen, Protestant. Throughout her reign, Elizabeth I had to deal with many rebellions which aimed to undermine her rule and overthrow her. Led in the main by those who wanted religious freedom and to reap the rewards of power, each one was thwarted but left an indelible mark on Queen Elizabeth and her governance of England. Learning from earlier Tudor rebellions against Elizabeth's grandfather, father, and siblings, they were dealt with mercilessly by spymaster Francis Walsingham who pushed for the execution of Mary Queen of Scots due to her involvement, and who created one of the first government spy networks in England. Espionage, spying and hidden ciphers would demonstrate the lengths Mary was willing to go to gain her freedom and how far Elizabeth's advisors would go to stop her and protect their Virgin Queen. Elizabeth I and Mary Queen of Scots were rival queens on the same island, pushed together due to religious intolerance and political instability, which created the perfect conditions for revolt, where power struggles would continue even after Mary's death. The Elizabethan period is most often described as a Golden Age; Elizabeth I had the knowledge and insight to deal with cases of conspiracy, intrigue, and treason, and perpetuate her own myth of Gloriana.