Beatrice of Portugal (1373–1409)
Born 1373 CE, died 1409 CE.
Beatrice (Portuguese: Beatriz, pronounced [bi.ɐˈtɾiʃ]; 7–13 February 1373 – c. 1420) was the only surviving legitimate child of King Ferdinand I of Portugal and his wife, Leonor Teles. She became Queen consort of Castile by marriage to King John I of Castile. Following her father's death without a legitimate male heir, she claimed the Portuguese throne but lost her claim to her uncle, who became King John I of Portugal, founder of the House of Aviz. During her early years, Beatrice was a pawn in the changing politics of foreign alliances of her father, who negotiated successive marriages for her. She would eventually marry King John I of Castile, by whom Beatrice became Queen Consort of Castile. At the death of her father, Beatrice was proclaimed Queen regnant of Portugal and her mother assumed the regency in her name.
Text from the Wikipedia article Beatrice_of_Portugal, licensed CC BY-SA 4.0.