Original: It is named after Abu l-Hasan Ali, or Muley Hacén as he is known in Spanish, the penultimate Muslim King of Granada in the 15th century, who according to legend was buried on the summit of the mountain.
Simplified: It is named after Abu l-Hasan Ali, or Muley Hacén as he is known in Spanish, the last-but-one Muslim King of Granada in the 15th century, who according to legend was buried on the summit of the mountain.