The background to the Uprising occurs during the reign of King Hywel II (1512-45). Hywel ascends to the throne at the tender age of 12 years old after the reign of his father Hywel the Unifier, so called because under him all of the historic country of Wales was unified under his rule in addition to the March and Gwlad yr Haf (the Bristol region) being added to the country. During his grandfathers reign (Owain) the tripartite Principality was formed, with the King as Prince of Gwynedd and surviving members of the old princely house being raised to the rank of Prince of Powys and Prince of Glamorgan.