There's already a thread in Urban Legends
Bloody Mary/Urban LegendsBUT
Before you start reading the other thread you need to know this:
QUOTE
Mary began her tumultuous reign at 37 years of age, arriving in London amid a scene of great rejoicing. Following the disarray created by Edward VI's passing of the succession to Lady Jane Grey (Jane lasted only nine days), Mary's first act was to repeal the Protestant legislation of her brother, Edward VI, hurling England into a phase of severe religious persecution. Her major goal was the re-establishment of Catholicism in England, a goal to which she was totally committed. Persecution came more from a desire for purity in faith than from vengeance, yet the fact remains that nearly 300 people (including former Archbishop of Canterbury, Thomas Cranmer and many of the most prominent members of society) were burned at the stake for heresy, earning Mary the nickname, "Bloody Mary."
SourceBloody Mary was originally Queen Mary 1st of England. No bathing in virgins blood, no mirror ghost, no nothing.