Original: Charles V ( 24 February 1500 -- 21 September 1558 ) was ruler of the Holy Roman Empire from 1519 and , as Charles I of Spain , of the Spanish realms from 1516 until his abdication in 1556 .
Simplified: Charles V ( 24 February 1500 21 September 1558 ) was Holy Roman Emperor , King of Spain , Naples , and Sicily , and king of the Burgundian territories .