Borrás Gualis 2014, p. 172. Borrás Gualis, Gonzalo M. (2014). "La Virgen de Tobed. Exvoto dinástico de los Trastámara"(PDF). In Escribano Paño, María Victoria; Duplá Ansuátegui, Antonio; Sancho Rocher, Laura; Villacampa Rubio, María Angustias (eds.). Miscelánea de estudios en homenaje a Guillermo Fatás Cabeza. Zaragoza: Institución Fernando el Católico. pp. 167–176. ISBN978-84-9911-302-9.
hebrewbooks.org
Abraham Zacuto (1452 – circa 1515), in his book Sefer Yuchasin, Kraków 1580 (q.v. Sefer Yuchasin, p. 265 in PDF) makes mention that in the year 5130 anno mundi (corresponding with 1369/70 of our Common Era) there was a time of great disturbance all throughout the Jewish communities of Castille and Ṭulayṭulah (Toledo) and that 38,000 Jews were killed in the ensuing wars between Henry and Peter.