Q269876

The House of Trastámara (Spanish and Aragonese: Casa de Trastámara) was a royal dynasty which first ruled in the Crown of Castile and then expanded to the Crown of Aragon from the Late Middle Ages to the early modern period.

They were an illegitimate cadet line of the House of Burgundy who acceded to power in Castile in 1369 as a result of the victory of Henry of Trastámara over his half-brother Peter I in the 1351–1369 Castilian Civil War, in which the nobility, and, to a lesser extent, the clergy had played a decisive role in favour of the former. The resulting dynastic change saw a radicalization of the antijewish sentiment in Castile, converging religious doctrinal anti-Judaism, aristocratic political antijudaism, and popular antijudaism exacerbated by the ongoing economic and social crisis, which had its climax in the 1391 pogroms.