Who was bloody mary and how did she earn her title?

"Bloody Mary" refers to Mary I of England, who reigned from 1553 to 1558. She earned her title due to her intense persecution of Protestants in an effort to re-establish Roman Catholicism in England, resulting in the execution of hundreds of individuals accused of heresy. Her reign was marked by a violent campaign against those who opposed her religious policies, leading to her enduring association with bloodshed and brutality.