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| | Castile and Aragon |
 | | Old Castile is in outline an irregular triangle, the western frontier bordering on the ancient Kingdom of Leon, the south-eastern boundary being the Sierras de Gredos, Guadarrama, and the Moncayo (Mons Caunus), and the north-eastern, the river Ebro. |
 | | Castile, with the title of king, was given to Ferdinand, who had married Sancha, the sister of Bermudo, who was to have married García Sánchez, the last independent count. |
 | | Ferdinand I, of Castile, united Castile and Leon, the latter having fallen to his wife upon the death of her brother, Bermudo III. |
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