Consolidation
Madog consolidated the possessions of his father, Gruffudd Maelor, and the territory he ruled became known as Powys Fadog in his honour. (Fadog is a gender mutation of his name, Madog). Under his son, later, Gruffydd II ap Madog, this area comprising Welsh and English Maelor, Ial, Cynllaith, Nanheudwy and part of Mochnant formed Powys Fadog, as opposed to Powys Wenwynwyn and was still referred to as Powys Fadog although it was divided up between his five sons.
Read more about this topic: Madog Ap Gruffydd Maelor