- Wife of Prince Juan of Aragon. [Pedro, ch. 21: 9]
- Sister of Don Tello Alfonso's wife.
- Sister-in-law of Don Tello Alfonso and his half-brother, Pedro of Castile.
- Arrested in Roa by Juan Fernández de Henestrosa, and imprisoned with her mother-in-law, the Queen of Aragon, in the Castle of Castrojeriz by order of Pedro of Castile, immediately after her husband was killed. [Pedro, ch. 21: 65-71]
- Prince Juan was married to Doña Isabel de Lara, the daughter of Don Juan de Lara, who had become the Lord of Vizcaya via his marriage to Doña María Díaz de Haro. Doña Juana, the wife of Don Tello, was Doña Isabel’s sister. [Pedro, ch. 21, note 1]