

Even though her living conditions were difficult, Isabella was instructed in lessons of practical piety and in a deep reverence for religion under the supervision of her mother. Although her father arranged in his will for his children to be financially well taken care of, King Henry did not comply with their father's wishes, either from a desire to keep his half-siblings restricted or from ineptitude. The living conditions at their castle in Arévalo were poor, and they suffered from a shortage of money. These were times of turmoil for Isabella. Isabella, her mother, and Alfonso then moved to Arévalo. Isabella and her brother Alfonso were left in King Henry's care.

When her father died in 1454, her half-brother ascended to the throne as King Henry IV of Castile. Isabella's younger brother Alfonso of Castile was born two years later on 17 November 1453, demoting her position to third in line. Henry was 26 at that time and married, but childless. At the time of Isabella's birth, she was second in line to the throne after her older half-brother Henry IV of Castile. Isabella was born in Madrigal de las Altas Torres, Ávila, to John II of Castile and his second wife, Isabella of Portugal, on 22 April 1451. 4 Cause of beatification and canonization.1.5.2 Columbus and Portuguese relations.Isabella was granted, together with her husband, the title of "Catholic monarch" by the Spanish Pope Alexander VI, and was recognized in 1974 as a Servant of God by the Catholic Church. Isabella I of Castile and Ferdinand II of Aragon are known for being the first monarchs to be referred to as "Queen of Spain" and "King of Spain" respectively, labeled such for completing the Reconquista, for issuing the Alhambra Decree which ordered the mass expulsion of Jews from Spain, for establishing the Spanish Inquisition, for supporting and financing Christopher Columbus's 1492 voyage that led to the arrival at the New World by Europeans and established the Spanish empire, for making Spain a major power in Europe and much of the world, and for ushering in the Spanish Golden Age. Her reforms and those she made with her husband had an influence that extended well beyond the borders of their united kingdoms. Isabella's marriage to Ferdinand in 1469 created the basis of the de facto unification of Spain. Īfter a struggle to claim the throne, Isabella reorganized the governmental system, brought the crime rate to the lowest it had been in years, and unburdened the kingdom of the enormous debt her half-brother King Henry IV had left behind. Reigning together over a dynastically unified Spain, Isabella and Ferdinand are known as the Catholic Monarchs. Isabella I ( Spanish: Isabel I 22 April 1451 – 26 November 1504) was Queen of Castile from 1474 until her death in 1504, as well as Queen consort of Aragon from 1479 until 1504 by virtue of her marriage to King Ferdinand II of Aragon.
