The Legend of Doña Blanca de Borbón
Doña Blanca de Borbón came to Castile like a vision of royal promise. Barely seventeen, she was a queen in every sense that the world could see: daughter of the noble house of Bourbon, niece to the king of France, and bride to the powerful Pedro I of Castile.
The marriage was not what it seemed. Behind the gold and banners, shadows gathered. Pedro's heart had long been pledged elsewhere—to María de Padilla. Blanca bore the title of queen but was denied the place of a wife. Her life became a pageant without substance.
Finally, she came to the fortress of Sigüenza. There, among stone walls that had seen centuries pass, she lived in gilded solitude. Her chambers looked down upon the town, yet her world grew narrow, her hopes dim. Her sorrow seeped into the stones themselves.
From that day to this, the people of Sigüenza whisper of the White Lady. On nights when the air is still and the moon casts a silver path along the ramparts, a pale figure walks the walls with the quiet sorrow of a wrong done by kings and never set right.
Retold from: Juan Antonio Martínez Gómez-Gordo, Doña Blanca de Borbón en el castillo de Sigüenza; local histories of Sigüenza and Pedro I.