Mary I, also known as Mary Tudor, was the Queen of England and Ireland from 1553 to 1558. She was a devout Catholic and was determined to restore Catholicism to England after the Protestant Reformation under her father, Henry VIII. Her reign was marked by religious persecution, particularly of Protestants. She ordered the execution of hundreds of Protestants, including many prominent religious leaders and scholars. This period of persecution became known as the "Marian Persecutions." One of the most famous victims of Mary's persecution was Thomas Cranmer, the Archbishop of Canterbury. Cranmer was a key figure in the English Reformation and had helped to establish the Church of England. He was imprisoned, tried for heresy, and eventually burned at the stake in 1556. Mary's reign was also marked by other political and economic problems. She married Philip II of Spain, a devout Catholic, which alienated many English people. Her policies led to economic hardship and social unrest. Mary died in 1558, and her half-sister, Elizabeth I, succeeded her. Elizabeth reversed Mary's religious policies and restored Protestantism to England.