1. 
   Saavedra, Ángel de, duque de Rivas
   Spanish poet, dramatist, and politician, whose fame rests principally on his play Don Álvaro, o la fuerza del sino (`Don Álvaro, or the Power of ...
   Found op http://www.britannica.com/eb/a-z/s/1
   
   
2. 
   Saavedra, Ángel de, duque de Rivas
   Saavedra, Ángel de, duque de Rivas: see Rivas, Ángel de Saavedra, duque de.
   Found op http://www.infoplease.com/ce6/people/A0918312.html
   
   

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