Muñia Sánchez Princessa de Castilla
- Born: 995, Navarra
- Marriage (1): Sancho "el Mayor" García Rey de Pamplona y conde de Aragón
- Died: After 13 Jul 1066, Fomistam, Iberia
Other names for Muñia were Muñadona and Muniadona Mayor.
Noted events in her life were:
• Web Reference: Charles Cawley's Medieval Lands, Muñia Mayor de Castilla.
The Crónica Latina records that "la huerfana doña Mayor, hija del…conde Sancho" married " [Crónica Latina de los reyes de Castilla]. She and her husband confirmed the rights of the Abbey of San Millán 24 Jun 1011[Pérez de Urbel (1969/70), Vol. III, p. 9].
Muñia married Sancho "el Mayor" García Rey de Pamplona y conde de Aragón, son of García II "el Temblón" Sánchez Rey de Navarra and Ximena Fernández. (Sancho "el Mayor" García Rey de Pamplona y conde de Aragón was born in 987-991, died on 18 Oct 1035 in Bureba, España and was buried in St. Salvador's, Oña, Burgos Province, Castile, España.)