What is the surname of the man who led the overthrow of fulgencio batista?

His surname is Castro, his full name is Fidel Alejandro Castro Ruiz, or Fidel Castro.

He was a Cuban lawyer, revolutionary, political leader, and according to some (depending on your political orientation) dictator who ruled Cuba for half a century.

He led the small group of guerrillas that took power from Fulgencio Batista in 1959, and two years after, established in Cuba a communist-inspired goverment aided by the Soviet Union.