Original: Mary Boleyn (c. 1499\/1500 - 19 July 1543) was the sister of English queen consort Anne Boleyn and a member of the Boleyn family, which enjoyed considerable influence during the reign of King Henry VIII of England.
Simplified: Mary Boleyn (about 1499 - 19 July 1543) was the elder sister of Anne Boleyn, the second wife of King Henry VIII. They had a brother called George Boleyn.