Lady Jane Grey
Lady Jane Grey was the granddaughter of Henry VII and became the Queen of England for just nine days in July 1553. She was a Protestant and was chosen as a successor to Edward VI to prevent the Catholic Mary I from taking the throne.
Her reign was short-lived, as Mary I quickly gathered support and deposed Jane. After her capture, Jane was imprisoned and ultimately executed in 1554 at the age of 16. Today, she is remembered as a tragic figure in English history, often referred to as the "Nine Days' Queen."