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
                                    SECOND POWYS DYNASTY
                                              CHART II
                                      735  Tegonwy ap Teon[1,2]
                           l                                              l
               765  Cynwrig                           765  Iorwerth Hirflawdd
                           l                                              l
                 795  Corf                                  795  Idnerth
                           l                    ________________l_____
                           l                    l                                 l     830
                 825  Ceido         Cynog Mawr 825             Gwenwyn
                           l                    l                                 l
              855 Lles Llydog         Bleddri  855                   Cadwr  865
                           l                    l                                 l
        885  Gwynnog Farfsych    Bleddyn  885                 Seferys  900
                           l                    l                                 l
             915  Gwaethfoed       Endowain  915                  Ifor  930
                           l                    l                                 l
 965 Nest vz===Gwerystan       Collwyn  945                Cuhelyn 960
       Cadell [3]       l     950          l                                 l       990
      CHART III        l                 Gwyn 975            Elystan Glodrydd
                           l                CHART IV                  CHART V
                           l 985                                     l
       wife 1===Cynfyn===wife 2                      daughter  990
                 l    [4,5]    l                                      =
       1020  Efa       Bleddyn[6]  1025           Gwyn ap Collwyn  975
                 =                                                CHART IV
       Llewelyn Aurdorchog 1005
             CHART I
The Charts cross-referenced above can be seen by clicking on the appropriate links which follow the notes below
[1]  This family descended from the Carnovii tribe of Celts whose lands comprised much of Shropshire and Herefordshire.  An early marriage with a lady of the 1st Powys Dynasty, whose lands were adjacent and north of them, resulted in their combined lands being called Powys.
[2]  By the era of Tegonwy, the Saxons had taken most of the land which now lies east of Offa's Dyke.  The ancestors of Gwerystan held land in Tegeingl granted them in the early 10th century for clearing it of Danish squatters.  Cynog Mawr was Lord of Arwystli, while Gwenwyn was Lord of Buillt and Fferlys....all lands within the original tribal territory.  Fferlys was taken from them by the ruler of neighboring Brychieniog, but that land was recovered by force by Elystan Glodrydd
[3]  Nest ferch Cadell was the only child of Powys king Cadell ap Brochwel ap Aeddon.  Her husband obtained no claim to the kingdom by marrying her
[4]  The first wife of Cynfyn was probably an Irish lady who bore him at least two daughters but died before 1023.  His second wife was Angharad ferch Maredudd ap Owain, king of Deheubarth (southwest Wales); she was the widow of Powys king Llewelyn ap Seisyllt by whom she had a single son, Gruffudd.  By Cynfyn, she had sons Rhiwallon and Bleddyn and probably a daughter. 
[5]  Cynfyn became interim king of Powys in 1023 when Llewelyn ap Seisyllt died because the latter had no sons or nephews yet old enough to become king.  He was considered because he was a maternal grandson of former King Cadell and because he married the mother of Gruffudd ap Llewelyn; Gruffudd was then about 12 years old and was designated as the next rightful king when he attained "full" age.
[6]  When Gruffudd ap Llewelyn was killed in 1063, his sons were about 22 years old and too young to be king.  The eldest son of Cynfyn, Rhiwallon, claimed the kingship of Powys in the right of his father, while Bleddyn ap Cynfyn took the kingship of Gwynedd which Gruffudd had also held.  The remaining Welsh kingdoms had been conquered by Gruffudd, but reverted to their own dynastic families in 1063.  In 1069, the sons of Gruffudd came of full age and did battle for their birthright at Mechain.  They killed Rhiwallon, but both of Gruffudd's sons died leaving Bleddyn in control of both Gwynedd and Powys.  His descendants held Powys until the 1282 conquest of Wales by England's Edward I, and no successful claims were ever made by other branches of the 1st Powys dynasty although several such families were extant
[1] ABT 1b; Mostyn Ms 117: for the ancestry of Bleddyn ap Cynfyn
[2] ABT 13 for the ancestry of Gwyn ap Collwyn
[3] ABT 11 for the ancestry of Elystan Glodrydd