Lady Mary Grey
Member of the House of Tudor
Lady Mary Keyes was the youngest daughter of Henry Grey, 1st Duke of Suffolk, and Frances Brandon, and through her mother had a claim on the crown of England. Wikipedia
Born: April 20, 1545
Died: April 20, 1578 (age 33 years), St Botolph without Aldgate
Spouse: Thomas Keyes (m. 1565–1571)
Place of burial: Westminster Abbey, London, United Kingdom
Siblings: Lady Katherine Grey and Lady Jane Grey