Owain Gwynedd ap Gruffydd , in English also known as Owen the Great, was King of Gwynedd from 1137 until his death in 1170. He is occasionally referred to as "Owain I of Gwynedd"; and as "Owain I of Wales" on account of his claim to be King of Wales

King of Wales

King of Wales was a very rarely used title, because Wales never achieved the degree of political unity that England or Scotland did. However, in the mid-11th century, one of the Welsh kings, Gruffydd ap Llywelyn, gained supreme power: "in 1055 he absorbed Deheubarth as well, thus becoming in...

. He is considered to be the most successful of all the north Welsh princes prior to his grandson, Llywelyn the Great

Llywelyn the Great

Llywelyn the Great , full name Llywelyn ab Iorwerth, was a Prince of Gwynedd in north Wales and eventually de facto ruler over most of Wales...

. He was known as Owain Gwynedd to distinguish him from another contemporary Owain ap Gruffydd, ruler of part of Powys

Powys

Powys is a local-government county and preserved county in Wales.-Geography:Powys covers the historic counties of Montgomeryshire and Radnorshire, most of Brecknockshire , and a small part of Denbighshire — an area of 5,179 km², making it the largest county in Wales by land area.It is...

 who was known as Owain Cyfeiliog

Owain Cyfeiliog

Owain ap Gruffydd was a prince of the southern part of Powys and a poet. He is usually known as Owain Cyfeiliog to distinguish him from other rulers named Owain, particularly his contemporary, Owain ap Gruffydd of Gwynedd, who is known as Owain Gwynedd.Owain was the son of Gruffydd ap Maredudd and...

.