Prince Al-Waleed bin Khaled bin Talal bin Abdulaziz Al Saud, widely known as the “sleeping prince” of Saudi Arabia, died on Saturday at the age of 36. He had been in a coma for 20 years. Prince Al-Waleed, a Saudi Arabian royal, born on April 18, 1989, who has been in a coma since he got into a car accident in London in 2005 at the age of 15, has died, according to multiple reports.