King Henry VIII was born on June 8th, 1491 from Henry VII and Elizthebeth of York. When he was 10, his brother married Catherine. A couple months later, his brother died and they planned to mary Catherine to Henry VIII. He was became King when he was 17 and married shortly after...King Henry was young and fit when he was married. He had a boy with Catherine but he died two months later. He also had a child named Mary, who would become known as Bloody Mary.