text: Catherine Howard ( c. 1520-1525 â `` 13 February 1542 ) , also spelled Katherine or Katheryn , was the fifth wife of Henry VIII of England , and sometimes known by his reference to her as his `` rose without a thorn '' .
simplified: Catherine Howard ( between 1520 and 1525 - February 13 1542 ) was the fifth wife of Henry VIII of England .