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DYFED KINGDOM
LATIN NAME DEMETIA

[MAXI061] Emperor Maximus of The West m. ?
. [DEME071] Governor Annun of Demetia then Galloway m. ?
. . [DEME081] King Ednyfed of Demetia m. ?
. . . [DEME091] King Clydwyn of Demetia m. ?
. . . . [DEME101] King Clotrius of Demetria m. ?
. . . . . [DEME112] Gwledyr ferch Clotrius m. [DYF1111] Tryffin mac Cyndwr

[MAXI061] Magnus Maximus [Welsh name Macsen Wledig], a Celt from Galicia, afterwards WESTERN ROMAN EMPEROR (383-88, see ROMAN EMPERORS OF THE WEST). He came to Britain (368) as an official in the household of Theodosius (with whom he claimed relationship), where he (allegedly) married Elen llwyddog verch Eudaf. He was killed near Aquileia on the the northern coast of the Adriatic (28th July 388).

There are various accounts of his origin, including:

son of a Spaniard without traceable origin (his claimed "relative" Theodosius was also born  in Spain, at Cauca, 11th January 347);

son of Cadwallon lawhir ab Einion yrth ap Cunedda wledig;

son of Llywelyn;

son of Flavius Julius Constantine II of Rome (son the EMPEROR CONSTANTINE I OF ROME)

a relative of Theodosius, who became EMPEROR THEODOSIUS I OF THE EAST.

His various wives include:

Elen llwyddog [of the hosts] (born c.340) ferch Eudaf hen ap Caradog (fictitious DUKE OF CORNWALL);

Helena, daughter of Coel (fictitious DUKE OF COLCHESTER);

Ceindrech ferch Rheiden;

Aparchia Vaitya;

Volusiana;

Eudoxia (widow of Valentinian).

 

[DEME071] Annun [based upon Antonius] Dy fed (said to be son of EMPEROR MAXIMUS), Governor of Demetia, later Governor of Galloway.

[DEME081] Ednyfed Ny fed (ap Annun), King of Demetia.

[DEME091] Clydwyn (ap Ednyfed), King of Demetia.

[DEME101] Clotrius (ap Clydwyn), King of Demetia.

[DEME122] Gwledyr (daughter & sole heiress of Clotrius) married [DYF1111] Tryffin farfog mac Cyndwr (see below under IRISH ORIGINS).

IRISH ORIGINS

The Deisi family original in County Wexford in Ireland, claiming descent from the mythical Beli mawr, the Celtic Sun God, through his son Miled.

[DYF1041] Cairbre m. ?
. [DYF1051] Artchorp mac Caibre m. ?
. . [DYF1061] Eochaid mac Artchorp m. ?
. . . [DYF1071] Corath mac Eochaid m. ?
. . . . [DYF1081] Aed mac Corath m. ?
. . . . . [DYF1091] Owain mac Aed m. ?
. . . . . . [DYF1101] Cyndwr mac Owain m. ?
. . . . . . . [BRYC101] Eurbrewyddel mac Cyndwr m. ?
. . . . . . . [DYF1111] Tryffin mac Cyndwr m. [DEME112] Gwledyr ferch Clotrius
. . . . . . . . [DYF1121] Eochaid mac Tryffin m. ?
. . . . . . . . . [DYF1131] Aircol mac Eochaid m. ?
. . . . . . . . . . [DYF1141] Gwerthefyr ab Aircol m. ?
. . . . . . . . . . . [DYF1151] King Cyngar of Dyfed m. ?
. . . . . . . . . . . . [DYF1161] Prince Pedr of Dyfed m. ?
. . . . . . . . . . . . . [DYF1171] Prince Arthwyr of Dyfed m. ?
. . . . . . . . . . . . . . [DYF1181] Prince Nowy of Dyfed m. ?
. . . . . . . . . . . . . . . [DYF1191] Prince Gwlyddien of Dyfed m. [BRYC192] Ceindrech ferch Rhiwallon
. . . . . . . . . . . . . . . . [DYF1201] King Cathen of Dyfed & Brycheiniog m. ?
. . . . . . . . . . . . . . . . . [DYF1211] King Cadwgon of Dyfed & Brycheiniog m. ?
. . . . . . . . . . . . . . . . . . [DYF1221] King Rhain of Dryfed & Brycheiniog m. ?
. . . . . . . . . . . . . . . . . . . [DYF1231] Prince Tewdws of Dyfed m. ?
. . . . . . . . . . . . . . . . . . . . [DYF1241] Prince Maredudd of Dyfed m. ?
. . . . . . . . . . . . . . . . . . . . . [DYF1251] King Owain of Dyfed m. ?
. . . . . . . . . . . . . . . . . . . . . . [DYF1262] Tangwystl ferch Owain m. [DYFE261] Bledri ab Arthwys III

[DYF1041] Cairbre (born in Ireland).

[DYF1051] Artchorp or Art Corp (born in Ireland, mac Cairbe).

[DYF1061] Eochaid allmuir [=over-sea] (born in Ireland, mac Artchorp) led a bid for independence but was crushed by the Irish High King, and had to flee to Wales (c.305). Known as Prince of the Irish Deisi tribe.

[DYF1071] Corath/Corath (born in Ireland, mac Eochaid).

[DYF1081] Aed broisc (born in Ireland, mac Corath) was settled by the Roman authorities in Demetia by 382.

[DYF1091] Owain fraisc mac Aed broisc.

[DYF1101] Cyndwr/Kynderyn mac Owain fraisc.

[BRYC101] Urb/Eurbrewyddel (born in Ireland, eldest son, mac Cyndwr) founded the Kingdom of Brycheiniog (see BRYCHEINIOG for full details).

[DYF1111] Tryffin farfog [=bearded] (youngest son, mac Cyndwr) married [DEME122] Gwledyr (sole heiress of Demetia, daughter of [DEME111] King Clotrius of Demetia, see above under DEMETIA).

[DYF1121] Eochaid mac Tryffin farfog.

[DYF1131] Aircol/Aergul/Agricola lawhir [=longhand] (mac Eochaid), was Protector of Demetia.

DYFED

[DYF1141] Gwerthefyr/Vortipor (ab Aircol) was Protector of Demetia (Dyfed). He died c.546, and his tombstone is at Castell Dwyran, Pembrokeshire.

[DYF1151] Cyngar (born c.510, ap Gwerthefyr) was King of Dyfed.

[DYF1161] Pedr (born c.535, ap Cyngar) was Prince of Dyfed.

[DYF1171] Arthwyr (i.e. Arthur Pendragon) (born c.560, ap Pedr) was a tyrannical Prince of Dyfed.

[DYF1181] Nowy/Noe (Noah) (born c.580 [570], ab Arthwyr) was Prince of Dyfed.

[DYF1191] Gwlyddien (born c.600, ap Nowy) married [BRYC192] Ceindrech (ferch Rhiwallon, see BRYCHEINIOG KINGDOM), and was Prince of Dyfed.

[DYF1201] Cathen (born c.625, ap Gwlyddien) was King of Dyfed & Brycheiniog.

[DYF1211] Cadwgon tydelig (born c.650, ap Cathen) was King of Dyfed & Brycheiniog.

[DYF1221] Rhain (born c.675, ap Cadwgon) was King of Dyfed & Brycheiniog.

[DYF1231] Tewdwr (born c.700, ap Rhain) was Prince of Dyfed.

[DYF1241] Maredudd (ap Tewdwr) was Prince of Dyfed, and was probably killed in conflict (796).

[DYF1251] Owain (ap Maredudd) was King of Dyfed (809-811), and was probably killed in conflict (811).

[DYF1262] Tangwystl/Tancoyslt (born c.790, ferch Owain), heiress of Demetia, married [DYFE261] Bledri (ab Arthwys), see below.

BLEDRI OF GLAMORGAN

[GLWY251] Arthwys III ap Fernfael m. ?
. [DYFE261] Bledri ab Arthwys III m. [DYF1262] Tangwystl ferch Owain
. . [DYFE271] King Hyfaidd of Dyfed m. ?
. . . [DYFE281] King Llywarch of Dyfed m. ?
. . . . [DYFE292] Elen ferch Llywarch m. [GWRI311] King Hywel of Dyfed, Seisyllwg & Powys

[DYFE261] Bledri/Bleiddig of Glamorgan (ab [GLWY251] Arthwys III, see GLYWYSING & MORGANNWG KINGDOMS) married [DYF1262] Tangwystl ferch Owain (under DYFED above).

[DYFE271] Hyfaidd (ap Bledri) was King of Dyfed (878-893). He died 893.

[DYFE281] Llywarch (ap Hyfaidd) was King of Dyfed (893-904), deposed (904), and then ritually drowned by Cadell (ap Rhodri of Gwynedd) and Llywarch's brother Rhodri (ap Hyfaidd).

[DYFE292] Elen (ferch, and heiress of, Llywarch) married (c.904) [GWRI311] King Hywel dda (ap Cadell, see SEISYLLWG, DEHEUBARTH & GWYNEDD KINGDOMS). Through this marriage Hywel inherited Dyfed and thereafter Dyfed was incorporated into Deheubarth.