Maelgwn Gwynedd was king of Gwynedd during the early 6th century. Surviving records suggest he held a pre-eminent position among the Brythonic kings in Wales and their allies in the "Old North" along the Scottish coast. Maelgwn was a generous supporter of Christianity, funding the foundation of churches throughout Wales and even far beyond the bounds of his own kingdom. Nonetheless, his principal legacy today is the scathing account of his behavior recorded in De Excidio et Conquestu Britanniae by Gildas, who considered Maelgwn a usurper and reprobate. The son of Cadwallon Lawhir and great-grandson of Cunedda, Maelgwn was buried on Ynys Seiriol, off the eastern tip of Anglesey, having died of the "yellow plague"; quite probably the arrival of Justinian's Plague in Britain.
Deheubarth was a regional name for the realms of south Wales, particularly as opposed to Gwynedd. It is now used as a shorthand for the various realms united under the House of Dinefwr, but that Deheubarth itself was not considered a proper kingdom on the model of Gwynedd, Powys, or Dyfed is shown by its rendering in Latin as dextralis pars or as Britonnes dexterales and not as a named land. In the oldest British writers, Deheubarth was used for all of modern Wales to distinguish it from Hen Ogledd, the northern lands whence Cunedda originated.
Cunedda ap Edern, also called Cunedda Wledig, was an important early Welsh leader, and the progenitor of the Royal dynasty of Gwynedd, one of the very oldest of Western Europe.
Cadfan ap Iago was King of Gwynedd. Little is known of the history of Gwynedd from this period, and information about Cadfan and his reign is minimal.
Einion ap Cunedda, also known as Einion Yrth, was a king of Gwynedd. He is claimed as an ancestor of the later rulers of North Wales.
Llanddewi Brefi is a village, parish and community of approximately 500 people in Ceredigion, Wales. The village is notable for the famous Synod of Brefi held here in the sixth century. A number of miraculous events are said to have occurred during the synod, most notably by Saint David Welsh: Dewi Sant, patron saint of Wales. Today, it is one of the largest parishes in Wales and lies 7 miles (11 km) north-east of Lampeter between Tregaron and Llanfair Clydogau.
Saint Cynllo is a British saint, who lived in the late 5th and early 6th centuries, generally described as a brother of Saint Teilo. Cynllo was known for "...the sanctity of his life and the austerity of his manners."
Brycheiniog was an independent kingdom in South Wales in the Early Middle Ages. It allied with the Mercian kingdom in the post Roman era, to stabilise and control a central (Marches) area key to dominance over central Proto-England to the east and the south Welsh kingdom of Deheubarth to the west. It was conquered and pacified by the Armorican Normans between 1088 and 1095, though it remained Welsh in character. It was transformed into the Lordship of Brecknock and later formed the southern and larger part of the historic county of Brecknockshire. To its south was the Kingdom of Morgannwg.
Saint Carantoc, also anglicized as Carantock, Carannog and by other spellings, was a 6th-century abbot, confessor, and saint in Wales and the West Country. He is credited with founding Llangrannog, Ceredigion, Wales and St Carantoc's Church, Crantock. His name is listed amongst the Cornish Saints. Carantoc's is one of five insular saints' lives and two Breton ones that mention Arthur in contexts that may be independent of Geoffrey of Monmouth's Historia Regum Britanniae. He is venerated by the Eastern Orthodox Church and Roman Catholic Church.
Saint Gwladys ferch Brychan or St Gladys, daughter of King Brychan of Brycheiniog, was the queen of the saint-king Gwynllyw Milwr and the mother of Cadoc "the Wise", whose Vita may be the earliest saint's life to mention Arthur. Gwladys's other children were Cynidr, Bugi, Cyfyw, Maches, Glywys II and Egwine. Today her main church and associated school is in Bargoed.
The Kingdom of Ceredigion was one of several Welsh kingdoms that emerged in post-Roman Britain in the mid-5th century. Cardigan Bay to the west and the surrounding hilly geography made it difficult for foreign invaders to conquer. Its area corresponded roughly to that of the county of Ceredigion. Ceredigion transparently means "the people of Ceredig." The kingdom as an independent entity ceased to exist around the year 872.
Afan of Builth was an early 6th-century Welsh bishop, martyr, and saint. His feast day is generally placed on 17 November, although the Demetian Calendar formerly used in southern Wales placed it on the 16th; it is no longer observed by either the Anglican or Catholic church in Wales.
Ceitho was an abbot and a saint living in West Wales in the 6th century. According to legend he was one of the five sons born to Cynyr Farfdrwch of Cynwyl Gaeo, and a descendant of the ancient Welsh king Cunedda Wledig. Along with his brothers Gwynno, Gwynoro, Celynin, and Gwyn, he became a saint. The five brothers are said to have founded the village of Llanpumsaint in Carmarthenshire.
Cadfan, sometimes Anglicized as Gideon, was the 6th century founder-abbot of Tywyn and Bardsey, both in Gwynedd, Wales. He was said to have received the island of Bardsey from Einion Frenin, king of Llŷn, around 516 and to have served as its abbot until 542.
Saint Teilo, also known by his Cornish name Eliud, was a British Christian monk, bishop, and founder of monasteries and churches. He was from Penalun (Penally) near Tenby in Pembrokeshire, south Wales.
A Saint Ilar is listed among the 6th-century saints of Wales and is the probable namesake of Llanilar in Ceredigion and its former hundred of Ilar. His feast day is variously given as 13, 14, or 15 January, but is no longer observed by either the Anglican or Catholic church in Wales.
Saint Ina is thought to be a fifth century Welsh saint and a member of the royal house of Gwynedd.
Cynyr Ceinfarfog was a ruler of the Kingdom of Dyfed in Wales. He was known as Cunoricus in Latin and in English as Kendrick or as Cynyr the Red.
Saint Meleri was a late 5th century Welsh saint and Queen of Ceredigion.
