Ferdinand was born in the city of Alcazar de San Juan on 6 December 1285 as the second child and eldest son of King Sancho IV of Castile and his wife María de Molina. He was baptized at Seville Cathedral by Archbishop Raimundo de Losana and was immediately proclaimed heir to the Crown and received the homage of the nobles of the kingdom.
Ferdinand IV, (born December 6, 1285, Sevilla—died September 7, 1312, Jaén, Andalusia), king of Castile and Leon, succeeding his father, Sancho IV, in 1295. Ferdinand survived his minority through the tact and bravery of his mother, María de Molina, who acted as regent. He was further aided by the loyalty of the citizens of Ávila, where he took refuge during an anarchic period marked by ...
Ferdinand IV. Ferdinand IV is the name of: Ferdinand IV of Castile (1285–1312), king of Castile and León from 1295. Ferdinand IV of Germany (1633–1654, king of the Romans from 1653, of Bohemia from 1646, of Hungary from 1647) Ferdinand IV of Naples (1751–1825, king 1759–1799; 1799–1806; 1815–1816) (Ferdinand III of Sicily 1759–1816)
In 1297, he signed the Treaty of Alcanizes with Ferdinand IV of Castile, establishing a permanent border between the two kingdoms.  During the suppression of the Knights Templar all over Europe , under the influence of Philip IV of France and Pope Clement V requesting its annihilation by 1312, King Denis reinstituted the Templars of Tomar ...
The conflict progressed, becoming a civil war that ended in 1284 with the victory of the king's son, who became Sancho IV. He fought off another Muslim invasion, then left the crown to Ferdinand IV. Alfonso was still around and made trouble for Ferdinand IV but gave up his quest for the kingship for good in 1304.
Ferdinand I (c. 1015 – 24 December 1065), called the Great (el Magno), was the Count of Castile from his uncle's death in 1029 and the King of León after defeating his brother-in-law in 1037. According to tradition, he was the first to have himself crowned Emperor of Spain (1056), and his heirs carried on the tradition.
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. Following his brother Ferdinand's death, he gained the support of nobles that declared him king instead of Ferdinand's son Alfonso. Faced with revolts throughout his reign, before he died he made ...
The beginning of the union of Aragon and Castile was the marriage of Ferdinand to Isabella, whose half-brother was Henry IV of Castile. Ferdinand and Isabella were married on Oct. 19, 1469, in Valladolid, in the Kingdom of Castile and León. They both promised to share power should either or both of them inherit a throne.
The kingdoms of Aragon, Castile, and Portugal spent the next century consolidating their holdings, until the marriage of Ferdinand II of Aragon and Isabella I of Castile in 1469 united the Spanish crown. The Catholic Monarchs, as Ferdinand and Isabella came to be known, completed the conquest of Granada in 1492.
After Aragon and Castile were united by the marriage of Ferdinand and Isabella (1469), the Marranos were denounced as a danger to the existence of Christian Spain. In 1478 Pope Sixtus IV issued a bull authorizing the Catholic Monarchs to name inquisitors who would address the issue.