Legendary History Prior to 1st Century BC
Beli Mawr and Llyr Llediath in Welsh Pedigrees
The Bartrum "Welsh Genealogies"
Bartrum's "Pedigrees of the Welsh Tribal Patriarchs"
A study in charting medieval citations
The Evolution of the "Padriarc Brenin" Pedigree
Generational Gaps and the Welsh Laws
Minimum Age for Welsh Kingship in the Eleventh Century
The Lands of the Silures
Catel Durnluc aka Cadell Ddyrnllwg
Ancient Powys
The Royal Family of Powys
The Royal Family of Gwynedd
The 5 Plebian Tribes of Wales
Maxen Wledig of Welsh Legend
Maxen Wledig and the Welsh Genealogies
Anwn Dynod ap Maxen Wledig
Constans I and his 343 Visit to Britain
Glast and the Glastening
Composite Lives of St Beuno
Rethinking the Gwent Pedigrees
The Father of Tewdrig of Gwent
Another Look at Teithfallt of Gwent
Ynyr Gwent and Caradog Freich Fras
Llowarch ap Bran, Lord of Menai
Rulers of Brycheiniog - The Unanswered Questions
Lluan ferch Brychan
The Herbert Family Pedigree
Edwin of Tegeingl and his Family
Angharad, Heiress of Mostyn
Ithel of Bryn in Powys
Idnerth Benfras of Maesbrook
Henry, the Forgotten Son of Cadwgan ap Bleddyn
The Muddled Pedigree of Sir John Wynn of Gwydir
The Mysterious Peverel Family
The Clan of Tudor Trevor
The Other "Sir Roger of Powys"
Ancestry of Ieuaf ap Adda ap Awr of Trevor
The Retaking of Northeast Wales
Hedd Molwynog or Hedd ap Alunog of Llanfair Talhearn
"Meuter Fawr" son of Hedd ap Alunog
The Medieval "redating" of Braint Hir
Aaron Paen ap Y Paen Hen
Welsh Claims to Ceri after 1179
The Battle of Mynydd Carn
Trahaearn ap Caradog of Arwystli
Cadafael Ynfyd of Cydewain
Maredudd ap Robert, Lord of Cedewain
Cadwgan of Nannau
Maredudd ap Owain, King of Deheubarth
What Really Happened in Deheubarth in 1022?
Two Families headed by a Rhydderch ap Iestyn
The Era of Llewelyn ap Seisyll
Cynfyn ap Gwerystan, the Interim King
The Consorts and Children of Gruffudd ap Llewelyn
The 1039 Battle at Rhyd y Groes
The First Wife of Bleddyn ap Cynfyn
Hywel ap Gronwy of Deheubarth
The Brief Life of Gruffudd ap Maredudd
Owain Brogyntyn and his Family
The Other Gwenwynwyn
Eunydd son of Gwenllian
Sandde Hardd of Mortyn
The Floruit of Einion ap Seisyllt
The Enigmatic Elystan Glodrydd
The Unofficial "History" of Elystan of Powys
Cowryd ap Cadfan of Dyffryn Clwyd
Owain ap Cadwgan and Nest ferch Rhys - An Historic Fiction?
The "sons" of Owain ap Cadwgan ap Bleddyn
The Betrayal by Meirion Goch Revisited
Gwyn Ddistain, seneschal for Llewelyn Fawr
The Men of Lleyn - How They Got There
Trahaearn Goch of Lleyn
Einion vs Iestyn ap Gwrgan - The Conquest of Glamorgan
The Royal Family of Glamorgan
Dafydd Goch ap Dafydd - His Real Ancestry
Thomas ap Rhodri - Father of Owain "Lawgoch"
The "Malpas" Family in Cheshire
Einion ap Celynin of Llwydiarth
Marchweithian, Lord of Is Aled, Rhufoniog
Osbwrn Wyddel of Cors Gedol
Bradwen of Llys Bradwen in Meirionydd
Ednowain ap Bradwen
Sorting out the Gwaithfoeds
Three Men called Iorwerth Goch "ap Maredudd"
The Caradog of Gwynedd With 3 Fathers
Who Was Sir Robert Pounderling?
Eidio Wyllt - What Was His Birthname?
The Legendary Kingdom of Seisyllwg
The Royal Family of Ceredigion
Llewelyn ap Hoedliw, Lord of Is Cerdin
The Ancestry of Owain Glyndwr
Welsh Ancestry of the Tudor Dynasty
Gruffudd ap Rhys, the Homeless Prince
The Children of Lord Rhys
Maredudd Gethin ap Lord Rhys
The 'Next Heir' of Morgan of Caerleon
Pedigree of the ancient Lords of Ial
The Shropshire Walcot Family
Pedigree of "Ednowain Bendew II"
Pedigree of Cynddelw Gam

                                           By Darrell Wolcott
         Also called "Idio Wyllt" by some sources, this Irishman is said to have come to Brycheiniog about 1090 to assist Rhys ap Tewdwr in his attempts to expel the Norman, Bernard Newmarch.  For his services, he was granted the manor of Llywel in Brecknock's Cantref Mawr[1].  Citations make him the son of Sitric ap Anlaf (Olaf) ap Sitric Silkbeard of Dublin, Ireland[2].  Thus Eidio's father was a brother of Rhanillt, the lady who married the refugee from Gwynedd, Cynan ap Idwal, and was mother to the first Gruffudd ap Cynan[3].  Eidio's mother was Nest ferch Tewdwr ap Cadell[4], so Rhys ap Tewdwr was his uncle.  Although Brecknock was ultimately lost to Newmarch in 1093, Eidio and his descendants continued to hold Llywel for several generations.  Other branches of his family later settled in neighboring Ystrad Tywy at Perfedd, Cantref Bychan and in Caeo, Cantref Mawr.
          Charts of his maternal family suggest he was born c. 1065 and came to assist his uncle as a man in his mid-20's:
                               820  Rhodri Mawr
                                850  Cadell
                               880  Hywel Dda
                                 915  Owain
                                 945  Einion
                                980  Cadell
                               1015  Tewdwr
                        l                              l
             1045  Rhys                1050  Nest====Sitric  1035
                                               1065  Eidio Wyllt
         Eidio married a Brecknock lady, Elen ferch Drymboenig ap Maenyrch ap Dryffin[5]; her father was a younger brother of Bleddyn ap Maenyrch, king of Brycheiniog until he was killed by Newmarch in 1093 (along with his ally, Rhys ap Tewdwr).  Elen was born c. 1080, so her marriage to Eidio would have been after Newmarch's final conquest.  This suggests that both the brother of Bleddyn and the nephew of Rhys were able to remain alive and keep possession of at least some of their lands by acknowledging Newmarch as their new Lord.
          Our query as to the birthname of Eidio arises when we begin to place his sons and their descendants on their likely timeline.  We find one branch of his family headed by Mabon ap Golwg Goch[6], another headed by Ysbwys ap Golwg Goch[7] and a third branch headed by Madog ap Golwg Goch[8].  In each case, Golwg Goch is cited as a son of Eidio Wyllt.  However, Mabon, Ysbwys and Madog could not chronologically be grandsons of Eidio.  The marriages cited in the families descended from Mabon and Ysbwys date the birth of those men as c. 1095/1100, about where we should expect to find sons of Eidio.  Even more curious is that the same analysis would date Madog to c. 1065....and these are precisely how Peter Bartrum dated the three men, all of which he nevertheless charted as grandsons of Eidio Wyllt[9].
          Our initial suggestion is that Golwg Goch was not a son of Eidio at all, but merely another nickname given him as in "Eidio Wyllt y Golwg Goch".  "Wyllt" itself is a descriptive nickname meaning "wild".  Golwg Goch simply means "red eyes".  While this solution would chronologically allow Mabon and Ysbwys to occur as sons of Eidio, the third man, Madog, appears to have been born about the same year as Eidio and could not be a son of his.  We posit that his citations should read "Madog y Golwg Goch" and not "Madog ap Golwg Goch".  Accordingly, we think the birthname of Eidio Wyllt was not Eidio at all, but was Madog.  While most citations for Caradog ap Madog continue with "ap Eidio Wyllt", one simply ends with "Caradog ap Golwg Goch"[10] suggesting that Madog and Golwg Goch were the same person. 
           There are no other occurrances of a male name "Eidio" in either Irish or Welsh genealogies, and we believe the man born as Madog was usually known as "the wild steer".  The bovine raised for its meat, rather than its milk, was called "eidion" by the Welsh, a word now applied to beef.  Like the image of a cattle stampede of the Old West, we suggest this young warrior was dubbed "the wild steer" in his youth, but later in life was often referred to as "with red eyes", perhaps because he was a hard drinker of mead. 
         One additional early "generation" is inserted into some pedigrees of this family[11].  A "Bywal" sometimes is cited as a son of Eidio and father to Golwg Goch.  We think it reasonably certain this was not a person at all, merely a corrupt rendition of Llywel.  An early citation likely mentioned a "Mabon ap Golwg Goch o Llywel" which was copied as "Mabon ap Golwg Goch ap Bywal". 
           With this proposed solution, the men in the charts will adhere to a common timeline:
                1065  Madog eidio wyllt y golwg goch o Llywel
                       l                     l                         l
           1095  Mabon     1100 Ysbwys       1095  Caradog
                       l                     l                         l
        1130  Gwrgeneu   1130 Tegwared    1125  Rhiwallon
                       l                     l                         l
         1160  Gruffudd    1160 Cadwgan     1160  Hoedliw
                       l                     l                         l
     1195  Cadwgan Hen   1195 Owain      1195  Trahaearn
          Probably the best-known branch of this family was that residing at Rhydoden in Caeo, Ystrad Tywy.  An heiress descended from Cadifor ap Selyf appears to have carried that manor to Trahaearn ap Hoedliw, by her marriage to him c. 1225[12]. 

[1] Robert Williams "A Biographical Dictionary of Eminent Welshmen", 1852, p 236
[2] Genealogies included in the 13th century Historia Gruffudd vab Cynan
[3] ibid note 2
[4] Dwnn i, 224
[5] Llyfr Baglan, 89; Dwnn i, 224
[6] Pen. 131, 246 & 304; Pen. 132, 126 & 173
[7] Pen. 131, 248; Pen. 132, 125 & 127
[8] Pen. 133, 52 & 306
[9] Peter C. Bartrum, "Welsh Genealogies AD300-1400", vol 2, chart Eidio 1
[10] Dwnn ii. 31
[11] See Dwnn i, 95, 187 & 225
[12] Dwnn 1, 20 cites "Joan ferch Gruffudd ap Meurig Goch of Caeo" married "Trahaearn ap Hoedliw ap Rhiwallon"; this lady was born c. 1210.  Pen. 131, 263 extends her ancestry as "Gruffudd ap Meurig Goch ap Gruffudd ap Cadifor ap Selyf"