• 
• Eugene O'Neill, Jr.
• Narrator
  

• 
• Philip Robinson
• Rebolledo, a soldier
  

• 
• Amelia Romano
• Chispa, his mistress
  

• 
• Jack Manning
• Don Alvaro, a captain
  

• 
• Robert Gardet
• Don Mendo, Poor Hidalgo
  

• 
• Leonardo Cimino
• Nuno, his servant
  

• 
• Ellen Andrews
• Isabel, daughter of Crespo
  

• 
• Herbert Berghof
• Pedro Crespo
  

• 
• Phillip Gordon
• Juan, his son
  

• 
• Gregory Morton
• Don Lope de Figueroa
  

• 
• Frederic Downs
• King Philip II
  

• 
• Will Davis
• A Soldier
  Notary
  

• 
• Marriott Wilson
• A Sergeant
  

• 
• Pedro Calderón de la Barca
• Writer
  

• 
• Edward Fitzgerald
• Translator
  

• 
• James Light
• Director
  

• 
• M. Eleanor Fitzgerald
• Company Manager
  

• 
• Marjorie Barkentin
• Press
  

• 
• Readers Theater Inc.
• Producer
  

• 
• Harry G. Alsberg
• Producer