Eleanor of Castile, Queen of Navarre
Eleanor of Castile( after 1363 – 27 February 1416) was an infanta of Castile and the Queen consort of Navarre.
She was the daughter of King Henry II of Castile and his wife, Juana Manuel of Castile, from a cadet branch of the Castilian royal house.
Eleanor was a member of the House of Trastámara.
Alfonso VII of León and Castile
Alfonso VII (1 March 110521 August 1157), called the Emperor ("el Emperador"), became the King of Galicia in 1111 and King of León and Castile in 1126.
Alfonso, born Alfonso Raimúndez, first used the title Emperor of All Spain, alongside his mother Urraca, once she vested him with the direct rule of Toledo in 1116.
Alfonso later held another investiture in 1135 in a grand ceremony reasserting his claims to the imperial title.
He was the son of Urraca of León and Raymond of Burgundy, the first of the House of Ivrea to rule in the Iberian peninsula.
Alfonso was a dignified and somewhat enigmatic figure.
His rule was characterised by the renewed supremacy of the western kingdoms of Christian Iberia over the eastern (Navarre and Aragón) after the reign of Alfonso the Battler.
Though he sought to make the imperial title meaningful in practice to both Christian and Muslim populations, his hegemonic intentions never saw fruition.
During his tenure, Portugal became "de facto" independent, in 1128, and was recognized as "de jure" independent, in 1143.
He was a patron of poets, including, probably, the troubadour Marcabru.
Peter of Castile, Lord of Ledesma
Peter of Castile( June 1260, in Seville – 10 October 1283, in Ledesma), was an infante of Castile.
He was a son of Alfonso X of Castile and Violant of Aragon who was also called Yolanda or Yolante.
He was Lord(" señor") of Ledesma, Alba de Tormes, Salvatierra, Miranda del Castañar, Galisteo and Granadilla.
James of Castile, Lord of Cameros
James of Castile( 11 July 1268 – 9 August 1284), was an infante of Castile and Lord of Cameros.
He was the youngest son of Alfonso X of Castile and Violant of Aragon.
Stephanie Alfonso of Castile
Stephanie Alfonso of Castile  (1139/1148 – 1 July 1180), also known as Stephanie the Unfortunate ("Estefanía la Desdichada"), was an illegitimate daughter of Alfonso VII of León and Castile and Urraca Fernández de Castro, widow of Count Rodrigo Martínez.
She was married to Fernando Rodríguez de Castro, which earned her the sobriquet, "the Unfortunate".
Violant of Aragon
Violant or Violante of Aragon, also known as Yolanda of Aragon( 8 June 1236 – 1301), was Queen consort of Castile and León from 1252 to 1284 as the wife of King Alfonso X of Castile.
Alfonso de la Cerda
Alfonso de la Cerda, (Valladolid 1270 - Ávila 1333), called the disinherited, was the elder son of Ferdinand de la Cerda and his wife Blanche of France, and was a grandson of Alfonso X of Castile.
Alfonso and his brother Fernando were candidates for the Castilian-Leonese crown during the reigns of Sancho IV of Castile, Ferdinand IV of Castile and Alfonso XI of Castile.
In 1331, Alfonso renounced his rights and swore allegiance to Alfonso XI of Castile.
Violant of Castile
Violant of Castile( 1265–1287/1308), infanta of Castile and Lady of Biscay on her marriage to Diego López V de Haro.
She was the daughter of Alfonso X of Castile, and Violant of Aragon.
Beatrice of Castile (1242–1303)
Beatrice of Castile( 1242/1244 – 27 October 1303), an illegitimate daughter of Alfonso X of Castile and his mistress Mayor Guillén de Guzmán, was the second Queen consort of Afonso III of Portugal.
Beatrice of Castile, Marchioness of Montferrat
Beatrice of Castile (5 November or 6 December 1254 - 1286) was a daughter of Alfonso X of Castile and his wife Violant of Aragon.
She was Marchioness of Montferrat by her marriage and was mother of Irene of Montferrat.

Question: Who is Stephanie Alfonso Of Castile's paternal grandfather?