This post has a similar premise to another post of mine from a few months ago
In January 1502, shortly after the marriage of the Prince of Wales with Catherine of Aragon, King Henry VII fell ill from sweating, preventing the newly married couple from leaving for Ludlow Castle, after a month and a half of agony, King Henry VII passed away on March 13, 1502, at the age of 45 leaving his young son to ascend the throne as King Arthur I, the second and best-known monarch of the Tudor Dynasty, Arthur would reign for the next 54 years, dying at the age of 70 on 23 October 1556, being remembered as a wise king, Arthur and his wife Catherine of Aragon would have twelve sons who would live to adulthood, a record that not even Philippa of Hainut could dream of achieving.
King Arthur I of England and Ireland (August 19, 1486 - October 23, 1556) and Catherine of Aragon (December 16, 1585 - January 31, 1551)
1.King Alfred I of England and Ireland (May 6, 1503) (Named after Alfred the Great, due to the fact that he was born on the historic date of the Battle of Edington, this was seen as a sign that Arthur named him in honor of the Legendary King of Wessex)
2.Henry, Duke of Somerset (May 6, 1503) (Named after Henry VII and Henry, Duke of York)
3.Edward, Duke of Richmond (March 21, 1505) (Named after King Edward IV, grandfather of Arthur)
4.Edmund, Duke of Lancaster (June 21, 1506) (Named after Edmund Tudor, paternal grandfather of Arthur and Edmund, Duke of Somerset the younger brother of Arthur)
5.Cardinal-John, Duke of Cambridge¹ (September 12, 1508) (Named after John of Gaunt, common relative of Catherine of Aragon and Arhut as well as Juan, Prince of Asturias)
6.Ferdinand, Duke of Bedford (July 30, 1510) (Named after Ferdinand II of Aragon, Father of Catherine of Aragon)
7.William, Duke of Kent (July 30, 1510) (Named after William, The Conqueror)
8.Francis, Duke of Sussex (October 4, 1512) (Named after Saint Francis of Assisi, saint of the day of his birth)
9.Christian, Duke of Northumberland (December 25, 1514) (Named Christian due to being born at Christmas)
10.Lionel, Duke of Cumberland (November 01,1516) (Named after Lionel of Artuepia, son of King Edward III)
11.Jasper, Duke of Wessex (November 01,1516) (Named after Jasper Tudor, paternal uncle of Arthur)
12.Alphonso, Duke of Nottingham (October 25, 1518) (Named after English version of Alfonso, name of several kings of Castile and Aragon)
[1] Although an English prince becoming a priest is unprecedented in England monarchy, Catherine of Aragon convinced Arthur to give him to the lord as thanks for his abundant offspring.
In January 1502, shortly after the marriage of the Prince of Wales with Catherine of Aragon, King Henry VII fell ill from sweating, preventing the newly married couple from leaving for Ludlow Castle, after a month and a half of agony, King Henry VII passed away on March 13, 1502, at the age of 45 leaving his young son to ascend the throne as King Arthur I, the second and best-known monarch of the Tudor Dynasty, Arthur would reign for the next 54 years, dying at the age of 70 on 23 October 1556, being remembered as a wise king, Arthur and his wife Catherine of Aragon would have twelve sons who would live to adulthood, a record that not even Philippa of Hainut could dream of achieving.

King Arthur I of England and Ireland (August 19, 1486 - October 23, 1556) and Catherine of Aragon (December 16, 1585 - January 31, 1551)
1.King Alfred I of England and Ireland (May 6, 1503) (Named after Alfred the Great, due to the fact that he was born on the historic date of the Battle of Edington, this was seen as a sign that Arthur named him in honor of the Legendary King of Wessex)
2.Henry, Duke of Somerset (May 6, 1503) (Named after Henry VII and Henry, Duke of York)
3.Edward, Duke of Richmond (March 21, 1505) (Named after King Edward IV, grandfather of Arthur)
4.Edmund, Duke of Lancaster (June 21, 1506) (Named after Edmund Tudor, paternal grandfather of Arthur and Edmund, Duke of Somerset the younger brother of Arthur)
5.Cardinal-John, Duke of Cambridge¹ (September 12, 1508) (Named after John of Gaunt, common relative of Catherine of Aragon and Arhut as well as Juan, Prince of Asturias)
6.Ferdinand, Duke of Bedford (July 30, 1510) (Named after Ferdinand II of Aragon, Father of Catherine of Aragon)
7.William, Duke of Kent (July 30, 1510) (Named after William, The Conqueror)
8.Francis, Duke of Sussex (October 4, 1512) (Named after Saint Francis of Assisi, saint of the day of his birth)
9.Christian, Duke of Northumberland (December 25, 1514) (Named Christian due to being born at Christmas)
10.Lionel, Duke of Cumberland (November 01,1516) (Named after Lionel of Artuepia, son of King Edward III)
11.Jasper, Duke of Wessex (November 01,1516) (Named after Jasper Tudor, paternal uncle of Arthur)
12.Alphonso, Duke of Nottingham (October 25, 1518) (Named after English version of Alfonso, name of several kings of Castile and Aragon)
[1] Although an English prince becoming a priest is unprecedented in England monarchy, Catherine of Aragon convinced Arthur to give him to the lord as thanks for his abundant offspring.
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