Elvira of Castile (before 1082? - 1151) was the illegitimate daughter of the great Alfonso VI of Castile, by his mistress Jimena Muñoz. She married, firstly, Raymond of Toulouse in 1094, and secondly, before 1117, Fernando Fernández.
Jimena Muñoz's name sometimes appears as Jimena Nuñez, because of a mistaken assumption that the two names are identical. She has been called sister of Rodrigo Muñoz, founder of the Guzman, but this is chronologically unlikely, and completely unsupported.
Elvira should not be confused with her legitimate half-sister Elvira Alfonso, wife of Roger II, King of Sicily 1130-1154.
