Research Notes:

The Chronicle of the Princes of Wales records that "Gruffudd Maelor king of Powys" died in 1191 and was buried "in Meivod".

Prince of Northern Powys (Fadog). ¹

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[The] founder of the principal ruling family of northern Powys during the 13th cent. When the province was divided into two spheres of influence on the death of Madog ap Maredudd in 1160, territories north of the Rhaeadr were subject to further subdivision among Gruffydd and his brothers... His share consisted of Maelor and Ial ( Bromfield and Yale ) to which he later added Nanheudwy, and on the death, in 1187, of Owain Fychan, the lands of Cynllaith and lower Mochnant. Excluding Penllyn and Edeirnion, he had thus reunited northern Powys... ²