Ancient history

Why did King Henry oldest son arthur not become king?

Arthur, the oldest son of King Henry VIII and Catherine of Aragon, did not become king because he died before his father. Arthur was born on September 20, 1486. He married Catherine of Aragon, the widow of his older brother Arthur, in 1509. Arthur died on April 2, 1502, of what was likely tuberculosis, at the age of 15. His younger brother, Henry, succeeded their father as King Henry VIII.