John I, Lord of Polanen
John I, Lord of Polanen( – 26 September 1342) was Lord of Polanen, Lord of De Lek and Lord of Breda.
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.
Blanche of Castile (1319–75)
Blanche of Castile( August 1319 – 1375) was by birth a member of the Castilian House of Burgundy.
She was the only child of Infante Peter of Castile, Lord of Los Cameros( son of King Sancho IV of Castile) and Infanta Maria of Aragon( daughter of King James II of Aragon).
Sancho IV of Castile
Sancho IV of Castile( 12 May 1258 – 25 April 1295) called the Brave(" el Bravo"), was the King of Castile, León and Galicia from 1284 to his death.
He was the second son of Alfonso X and Yolanda, daughter of James I of Aragon.
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.
Maria of Portugal, Lady of Meneses and Orduña
Maria of Portugal (born ca. 1290) was a Portuguese royal, daughter of "Infante "Afonso of Portugal and his wife Violante Manuel.
Believed to be born in the year 1290, she was the eldest daughter of the Infante Afonso of Portugal and his wife Violante Manuel.
She was the paternal granddaughter of King Afonso III of Portugal and his wife, Queen Beatrice of Castile, daughter of Alfonso X of Castile.
Her maternal grandparents were "Infante" Manuel of Castile, son of Ferdinand III of Castile, and his wife Constance of Aragon, Lady of Villena, daughter of James I of Aragon.
Her date of death is unknown.
Maria married firstly to Tello Alfonso de Meneses, Lord of Meneses, son of Alfonso Téllez de Molina and the grandson of Alfonso of Molina.
The couple had two children:
She became a widow after her husband died in 1315; she remarried to Fernando Díaz de Haro, Lord of Orduña and Balmaseda, the second son of Diego López V de Haro.
This marriage bore two sons:
Philip of Castile, Lord of Cabrera and Ribera
Philip of Castile (Seville, 28 May 1292 – Madrid, April 1327), was an "infante of Castile", son of Sancho IV of Castile and María de Molina.
He was Lord of Cabrera and Ribera and regent of his nephew Alfonso XI of Castile.
He married his cousin Margarita de la Cerda, daughter of Alfonso de la Cerda.
Alfonso X of Castile
Alfonso X of Castile (also occasionally known as Alfonso X, Alphonso, Alphonse, or Alfons, The Wise ; 23 November 1221 in Toledo4 April 1284 in Seville) was a Spaniard, who was the King of Castile, León and Galicia from 30 May 1252 until his death in 1284.
During the election of 1257, a dissident faction chose him to be Roman-German king on 1 April.
He renounced his claim to Germany in 1275, and in creating an alliance with England in 1254, his claim on Gascony as well.
Alfonso X fostered the development of a cosmopolitan court that encouraged learning.
Jews, Muslims, and Christians had prominent roles in his court.
As a result of his encouraging the translation of works from Arabic and Latin into the vernacular of Castile, many intellectual changes took place, perhaps the most notable being encouragement of the use of Castilian as a primary language of higher learning, science, and law.
Alfonso was a prolific author of Galician poetry, such as the "Cantigas de Santa Maria", which are equally notable for their musical notation as for their literary merit.
Alfonso's scientific interests—he is sometimes nicknamed the Astrologer ("el Astrólogo")—led him to sponsor the creation of the Alfonsine tables, and the Alphonsus crater on the moon is named after him.
As a legislator he introduced the first vernacular law code in Spain, the "Siete Partidas".
He created the Mesta, an association of sheep farmers in the central plain, but debased the coinage to finance his claim to the German crown.
He fought a successful war with Portugal, but a less successful one with Granada.
The end of his reign was marred by a civil war with his eldest surviving son, the future Sancho IV, which continued after his death.
Urraca of Covarrubias
Urraca of Castile( died after January 1038) was co-regent of Castile during the minority of her nephew, García Sánchez of Castile, in 1017- 28.
Maria of Aragon, Lady of Cameros
Maria of Aragon( c. 1299–1347 in Sijena) was a daughter of James II of Aragon and his second wife Blanche of Anjou.
She married Peter of Castile, Lord of Cameros( 1290 – 1319), son of Sancho IV of Castile.
Their daughter, Blanche of Castile( 1315 – 1375), was betrothed to Peter I of Portugal but the marriage never took place.
Maria died at Sijena in 1347.

Question: Where was the place of death of James Of Castile, Lord Of Cameros's father?
Answer: Seville