Kings of Dyfed

Before the Conquest of Wales was completed in 1282, Wales consisted of a number of independent kingdoms, the most important being Gwynedd, Powys, Deheubarth (originally Ceredigion, Seisyllwg and Dyfed), Gwent and Morgannwg. Boundary changes and the equal division of patrimony meant that few princes ever came close to ruling the whole of Wales.

The names of those known to have ruled over one or more of the kingdoms are listed below (those in heavy type ruled over a large portion of Wales).

In 909, Dyfed was merged with Seisyllwg (which included Ceredigion) to become Deheubarth. The following is a list of kings of the two former kingdoms, followed by the kings of the combined Deheubarth (beginning with Hywel Dda).

Ruled by Glywysing monarchs.

Ruled by House Dinefwr

House Manaw

Deheubarth was in the possession of the Normans from 1093 to 1155

From 1234 to 1283, Deheubarth was subject to the princes of Gwynedd

Iestyn was the last ruler of an independent Morgannwg, which was thereafter in the possession of the Normans and became the lordship of Glamorgan

Iestyn was the last ruler of an independent Morgannwg, which was thereafter in the possession of the Normans and became the lordship of Glamorgan

From 1160 Powys was split into two parts. The southern part was later called Powys Wenwynwyn after Gwenwynwyn ab Owain "Cyfeiliog" ap Madog, while the northern part was called Powys Fadog after Madog ap Gruffydd "Maelor" ap Madog

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