Mary Tudor, Queen of England was born on Monday, 18th of February 1516, at the Palace of Placentia in Greenwich. She was the only surviving child of Henry VIII and his first wife Catherine of Aragon. Mary was the first Mary Queen of England and is known as Mary 1, Queen of England and Ireland.
Some historians think the beautiful, but wicked, Aelfthryth (c.945-1000) was the first queen of England, while others believe Matilda (c.1102-1167), the daughter of King Henry I, was the first female monarch. Queen Mary I (1516-1558), aka Bloody Mary after burning many religious opponents at the stake, was officially anointed and crowned, so is generally recognised as the first woman to rule. Early kings of England include Athelstan (c.895-939) whose victories over the Vikings and the Scots meant he was crowned first king of a united England. However, to complicate matters, his grandfather, Alfred the Great (c.849–899; pictured above), was the first to be crowned King of the English.
Answered by Bridget McDermott, How It Works contributor.
I highly recommend The First Queen of England: Myth of "Bloody Mary". It is a highly fascinating, meticulously researched biography that turns the myth about Mary the First on its head. Definitely read this if you love history and learning about the Tudors.