Simplify the following text for a Grade 5 native English-speaking person.
Original: Gary Cooper ( born Frank James Cooper May 7 , 1901 â `` May 13 , 1961 ) was an American film actor . His career went from the 1925 until 1961 , during which he made one hundred films .
Simplified: One month later , on May 13 , 1961 , six days after his 60th birthday , Cooper died .