Complex sentence: She was an illegitimate daughter of King Alfonso VII of León and Castile, but despite this birth status, she became Queen Consort of Navarre by her marriage to García Ramírez of Navarre in 1144.
Split into simpler sentences: She was an illegitimate daughter of King Alfonso VII of León and Castile, but despite this birth status. Reilly, 1998: pp.67,83 Despite her illegitimacy, she became Queen Consort of Navarre by her marriage to García Ramírez of Navarre in 1144.