Lady Jane Grey (1536/1537 12 February 1554) was a claimant to the Kingdom of England and Kingdom of Ireland. She was de facto monarch of England after the death of Edward VI for just over a week in July 1553. Residing in the Tower of London during her short reign, she never left the premises again. Her execution in February 1554 was caused by her father's involvement in Wyatt's rebellion. Lady Jane Grey's rule of less than two weeks is the shortest rule of England in its history. Historians have taken either the day of her proclamation as queen, 10 July, or that of her predecessor's death, 6 July, as the beginning. Hence her popular names of "The Nine Days' Queen" or, less commonly, "The Thirteen Days' Queen". She is sometimes reckoned the first Queen regnant of England. Lady Jane had an excellent Humanist education and a reputation as one of the most learned women of her day. A committed Protestant, she was posthumously regarded not only as a political victim but also as a martyr