Kurš apprecējās ar Stephanie Alfonso of Castile?

Stephanie Alfonso of Castile (Spanish: Estefanía Alfonso de Castilla) (1139/1148 – 1 July 1180) was an illegitimate daughter of Alfonso VII of León and Castile and Urraca Fernández de Castro, widow of Count Rodrigo Martínez, who was Urraca's cousin or uncle. Her murder by her husband, Fernando Rodríguez de Castro, earned her the sobriquet Stephanie the Unfortunate (Estefanía la Desdichada).

Fernando Rodríguez de Castro (1125–1185) was a Castilian nobleman, statesman and military leader who made his career in León. He was the leader of the House of Castro during the civil wars that followed the death of Sancho III of Castile and the succession of the infant Alfonso VIII. He was nicknamed el Castellano ("the Castilian") in León and el Leonés ("the Leonese") in Castile.