• 
• Howard Bailey
• Piere Buonaventuri
  

• 
• Phoebe Coyne
• Emilia
  

• 
• May Ediss
• Marietta
  

• 
• Patrick Glasgow
• Scipio
  A Baker's Boy
  

• 
• Roland Hogue
• Consini
  

• 
• Kemble Knight
• Vettora
  

• 
• Catherine Lacey
• Antonia
  Julia
  

• 
• Marian Litenius
• Tessa
  A Lady-in-Waiting
  

• 
• Lea Penman
• Giovanna of Austria
  

• 
• Margaret Rawlings
• Bianca Cappello
  

• 
• Gregory Robins
• Celio Malespini
  

• 
• Alastair Sim
• Cardinal Ferdinando de' Medici
  

• 
• Wilfred Walter
• Francesco de' Medici
  

• 
• Edward Broadley
• A Major-Domo
  

• 
• Charles Crompton
• A Servitor
  

• 
• Helena Glenn
• Another Lady-in-Waiting
  

• 
• Frank Woodruff
• A Servitor
  

• 
• Clifford Bax
• Writer
  

• 
• Ellen Van Volkenburg
• Staging
  

• 
• Maurice Browne
• Producer
  

• 
• Lee Shubert
• Associated Producer
  

• 
• J.J. Shubert
• Associated Producer