Madog consolidated the possessions of his father, Prince Gruffudd Maelor, and the territory he ruled became known as Powys Fadog in his honour, the remainder of the old kingdom formed Powys Wenwynwyn.
Madog amassed his father's holdings, Prince Gruffudd Maelor, and the territory he ruled was named Powys Fadog in his honor. The remainder of the former kingdom became known as Powys Wenwynwyn.