Sancho Alfonso, 1st Count of Alburquerque
|1st Count of Alburquerque|
Arms of Sancho of Castile
|Spouse||Beatrice of Portugal|
|Issue||Fernando Sánchez, 2nd Count of Alburquerque
Eleanor, Queen of Aragon
|House||House of Burgundy-Spain|
|Father||Alfonso XI of Castile|
|Mother||Eleanor of Guzman|
|Died||19 March 1374 (aged 31–32)
In 1373 he married Beatrice of Portugal, daughter of Peter I of Portugal and Inês de Castro. They had two children: Don Fernando Sánchez, 2nd Count of Alburquerque, and Doña Eleanor of Alburquerque, who married Ferdinand I of Aragon.
He also had an illegitimate daughter, Doña Leonor Sánchez de Castilla, who married Fadrique de Castilla y Ponce de Leon, illegitimate son of Henry II, King of Castile.
|Ancestors of Sancho Alfonso, 1st Count of Alburquerque|
Francisco de Moxó y de Montoliu, Estudios sobre las relaciones entre Aragón y Castilla, 1997, ISBN 84-7820-387-7