Simplify the following text for a Grade 8 native English-speaking person.
Original: King Fahd bin Abdul Aziz Al Saud , Custodian of the Two Holy Mosques , ( 16 March 1921 -- 1 August 2005 ) was the King of the Kingdom of Saudi Arabia , Head of the House of Saud as well as Prime Minister .
Simplified: King Fahd bin Abdul Aziz Al Saud , Custodian of the Two Holy Mosques , ( 1921 - August 1 , 2005 ) was the King of the Kingdom of Saudi Arabia . He was also the leader of the House of Saud and Prime Minister .