Question: Who is Ferdinand Iv Of Castile's father?

Knowledge 1: Ferdinand IV of Castile
Ferdinand IV of Castile (6 December 1285 – 7 September 1312) called the Summoned ("el Emplazado"), was a King of Castile and León from 1295 until his death.During his minority, his upbringing and the custody of his person were entrusted to his mother, Queen María de Molina, while his tutorship was entrusted to the "Infante" Henry of Castile the Senator, son of King Fernando III of Castile.At that time, and also for the rest of his reign, his mother tried to placate the nobility, confronted her son's enemies, and repeatedly prevented Ferdinand IV from being dethroned.He had to face the insubordination of the nobility, led at numerous times by his uncle, the "Infante" John of Castile, Lord of Valencia de Campos and by Juan Núñez II de Lara, who were supported in some occasions by Juan Manuel, Prince of Villena and grandson of the King Ferdinand III.Like his predecessors on the throne, Ferdinand IV continued the "Reconquista" and, although he failed to conquer Algeciras in 1309, he captured the city of Gibraltar that same year, and in 1312 the city of Alcaudete was also conquered.During the "Cortes" of Valladolid of 1312, he promoted the reform of the administration of justice, and that of all areas of administration, while attempting to strengthen the royal authority to the detriment of the nobility.He died in Jaén on 7 September 1312 aged 26, and his mortal remains are now in the Royal Collegiate Church of Saint Hippolytus. [SEP] Knowledge 2: María de Molina
María Alfonso Téllez de Meneses (c. 1265 – 1321), known as María de Molina, was queen consort of Castile and León from 1284 to 1295 by marriage to Sancho IV of Castile, and served as regent for her minor son Ferdinand IV (1295 - c.1301) and later her grandson Alfonso XI of Castile (1312-1321).
Knowledge 1: Ferdinand IV of Castile
Ferdinand IV of Castile (6 December 1285 – 7 September 1312) called the Summoned ("el Emplazado"), was a King of Castile and León from 1295 until his death.During his minority, his upbringing and the custody of his person were entrusted to his mother, Queen María de Molina, while his tutorship was entrusted to the "Infante" Henry of Castile the Senator, son of King Fernando III of Castile.At that time, and also for the rest of his reign, his mother tried to placate the nobility, confronted her son's enemies, and repeatedly prevented Ferdinand IV from being dethroned.He had to face the insubordination of the nobility, led at numerous times by his uncle, the "Infante" John of Castile, Lord of Valencia de Campos and by Juan Núñez II de Lara, who were supported in some occasions by Juan Manuel, Prince of Villena and grandson of the King Ferdinand III.Like his predecessors on the throne, Ferdinand IV continued the "Reconquista" and, although he failed to conquer Algeciras in 1309, he captured the city of Gibraltar that same year, and in 1312 the city of Alcaudete was also conquered.During the "Cortes" of Valladolid of 1312, he promoted the reform of the administration of justice, and that of all areas of administration, while attempting to strengthen the royal authority to the detriment of the nobility.He died in Jaén on 7 September 1312 aged 26, and his mortal remains are now in the Royal Collegiate Church of Saint Hippolytus. [SEP] Knowledge 2: Jerrold Wexler
Jerrold Wexler( June 27, 1924 – November 10, 1992) was a noted American businessman and film producer.He was the brother of cinematographer Haskell Wexler and the stepfather of actress Daryl Hannah.
Knowledge 1: Ferdinand IV of Castile
Ferdinand IV of Castile (6 December 1285 – 7 September 1312) called the Summoned ("el Emplazado"), was a King of Castile and León from 1295 until his death.During his minority, his upbringing and the custody of his person were entrusted to his mother, Queen María de Molina, while his tutorship was entrusted to the "Infante" Henry of Castile the Senator, son of King Fernando III of Castile.At that time, and also for the rest of his reign, his mother tried to placate the nobility, confronted her son's enemies, and repeatedly prevented Ferdinand IV from being dethroned.He had to face the insubordination of the nobility, led at numerous times by his uncle, the "Infante" John of Castile, Lord of Valencia de Campos and by Juan Núñez II de Lara, who were supported in some occasions by Juan Manuel, Prince of Villena and grandson of the King Ferdinand III.Like his predecessors on the throne, Ferdinand IV continued the "Reconquista" and, although he failed to conquer Algeciras in 1309, he captured the city of Gibraltar that same year, and in 1312 the city of Alcaudete was also conquered.During the "Cortes" of Valladolid of 1312, he promoted the reform of the administration of justice, and that of all areas of administration, while attempting to strengthen the royal authority to the detriment of the nobility.He died in Jaén on 7 September 1312 aged 26, and his mortal remains are now in the Royal Collegiate Church of Saint Hippolytus. [SEP] Knowledge 2: Héctor Barrantes
Héctor Barrantes Sansoni( 1939–1990) was an Argentine polo player.He was the stepfather of Sarah, Duchess of York.

Answer: Sancho IV of Castile