What if John, Prince of Asturias lived?
Monarchs of Castile
1474-1504: Isabella I (House of Trastamara)
1504-1518: John III (House of Trastamara) [1]
Monarchs of Castile and Aragon
1518-1521: John III (House of Trastamara) [1]
Monarchs of Castile, Aragon and Navarre
1521-1525: John III and IV (House of Trastamara) [1]
1525-1545: Ferdinand I, III and V (House of Trastamara) [2]
(1)
Born in 1478, John was the only child of his Parents, Isabella I of Castile and Ferdinand II of Aragon, who were later dubbed "The Catholic Monarchs", due to their piety. John was groomed to be King from a young age, and was trained in the arts of governance and diplomacy. His parents wanted to form an alliance with the Holy Roman Empire against France and so would betroth him to the Holy Roman Emperor's daughter Margaret of Austria. The two would marry in 1497, and would quickly fall in love. However, John fell dangerously ill not long after their marriage and almost died. Fortunately he'd live and sire 4 children with his Wife.
In 1504, John inherited Castile from his Mother, Isabella, though he would not become King of Aragon until 1518, when his Father died. He quickly continued many of his Mother's policies, most crucially her fanatical-Catholicism and anti-French diplomacy. John would partake in many of the Italian Wars, using Castilian manpower to help defeat the French. In the most crucial Italian War, the War of the League of Cambrai, John led a force of 50,000 men against the French in Italy, helping push them out of Italy and capturing their stronghold of Milan. After several more years of bitter fighting France would capitulate in 1515, and Castile and Aragon would reap the benefits. Several border towns and forts on the Castilian-French Border, were ceded to Castile and/or Aragon. France also renounced all of their claims to Castilian territory, and paid a massive some of money in reparations.
John also began a rivalry with the Ottomans, sponsoring many raids on their lands and territories, hoping to weaken the great Islamic power. The raids never resulted in War but tensions between the two titans rose sharply. One Ottoman Diplomat would refer to Castile as "Home to the fanatics".
In 1518, Ferdinand II of Aragon passed away, and John would inherit the Kingdom, at last uniting the great Kingdoms of Castile and Aragon. Almost immediately he set his eyes North onto the tiny Kingdom of Navarre, to which he had a claim. France had agreed to not interfere in any Castilian or Aragonese invasion of Navarre, which left the Kingdom ripe for the taking for John. John would launch his invasion in 1519, and would conquer the entire Kingdom in 1521, with the Navarrese royal family taking refuge in France.
On the Colonisation front, John continued many of his Mother's policies, treating the natives with respect and sponsoring explorers and conquistadors. On one occasion he learnt of a man called Hernan Cortes who led a bloody conquest of the Aztec Empire, and slaughtered many of it's people. While John would permit colonisation of the region, he had Hernan arrested and later executed for treason. He also donated a sizeable sum of money to the Aztec people in hopes of helping them recover.
Religion wise, John hated the birth of Protestantism, when Martin Luther pinned his 95 theses to a Church door in Germany. He put a bounty of 1,000 Crowns on Martin to be brought to him. Though this would fail, John sponsored many enemies of Luther and his adherents, sending vast sums of money to some German duchies, which brought a wave of wealth to the Kingdoms, and introduced Spanish economic policies to the Kingdom.
In 1525, John fell ill with Smallpox, and despite his best efforts he would pass away. Upon his death he was succeeded by __________.
(2)
Ferdinand was the eldest of the four children of John III, and like his father, the only son. He took the thrones in 1525, having married Caterina Cybo, a niece of Pope Leo XI and granddaughter of Pope Innocent VIII. The resultant eight children born from 1520, all male, born healthy, would survive to adulthood - and would be seen as evidence that whilst Caterina was not of noble heritage, the marriage had been blessed by the divine spirit. Ferdinand had a relatively short reign of two decades, and saw his cousins ascend the thrones in England (Henry VIII), Burgundy (Charles II) and Portugal (Miguel I) and this, alongside his ties to the Vatican, left him with a steady position on the continent.
Still, Henry II, King Claimant of the Navarese Court in Exile, made constant plots to reclaim his lands. Henry had only daughters, Jeanne (1528) and Catherine (1530), and so Ferdinand made the tactical move to arrange the marriage of both Jeanne and Catherine to two of his sons, attempting to pacify the Navarese in a manner not unlike Henry VII's marriage to Elisabeth of York over fifty years earlier.
He married another son to his cousin Miguel I of Portugal's daughter, Dona Isabella, and yet another to Lady Catherine Tudor, daughter of his cousin, Henry VIII. By 1545, all of his sons had married or become engaged, some had produced issue and others had not, but when he died, Ferdinand was in the company of his heir _________ as well as Queen Caterina
Isabella I, Queen Regnant of Castile and Consort of Aragon, b. 1451, r 1464 to 1504, m.
Ferdinand II, King of Aragon
suo jure and King of Castile
jure uxoris
1) Isabella, Queen Consort of Portugal. 1470, m. Manuel I of Portugal
a) Miguel I, King of Portugal, b. 1498
1) Dona Isabella of Portugal, marries a son of Ferdinand I, III and IV
2) John III and IV, King of Aragon, Castile and Navarre, b 1478, r. 1504 (Castile) / 1517 (Aragon) / 1521 (Navarre) to 1525, m. Margaret of Austria
a) Ferdinand I, III and V, King of Aragon, Castile and Navarre, b. 1500, r. 1525 to 1545, m. Caterina Cybo
1) eight sons, two of which marry Joanne and Catherine d'Albret, one of whom marries Isabella of Portugal, and another who marries Lady Catherine Tudor
x) three other children
3) Joanna, Duchess of Burgundy, b. 1479, m. Philip 'the Handsome', Duke of Burgundy
a) Charles II, Duke of Burgundy, b. 1500
4) Maria l, Queen Consort or Portugal, b. 1482, m. Manuel I of Portugal
5) Catherine, Queen of England, b. 1485, m. Arthur I of England
a) Henry VIII, King of England, b. 1510
1) Lady Catherine Tudor, marries a son of Ferdinand I, III and IV