Guest-written Papers
Reference Abbreviations
Guidance Articles for Researchers
Single Family Analysis
Families of Mixed Origin
Family Pedigrees
Mis-identified Same-Named People in Wales
Battles and Historical Events
Ancient Welsh Territories
Welshmen in Llydaw, Brittany
The Men of the North
Legendary History Prior to 1st Century BC
Beli Mawr and Llyr Llediath in Welsh Pedigrees
Papers Related to Maxen Wledig
Bartrum's "Pedigrees of the Welsh Tribal Patriarchs"
Britain's Royal Roman Family
The Royal Family of Powys
2nd Powys Royal Dynasty
The Royal Family of Gwynedd
Men Descended from Tudwal Gloff
Royal Family of Gwent/ Glamorgan
Royal Family of Brycheiniog
The 5 Plebian Tribes of Wales
Glast and the Glastening
Papers about Rhiryd Flaidd and Penllyn
The Men of Collwyn ap Tangno of Lleyn
Edwin of Tegeingl and his Family
Ednowain Bendew in Welsh pedigrees
Maelog Crwm of Arllechwedd Isaf and Crueddyn
Nefydd Hardd of Nant Conwy
Ithel of Bryn in Powys
Idnerth Benfras of Maesbrook
Tudor Trefor and his Family
Trahaearn ap Caradog of Arwystli
The Family of Trahaearn ap Caradog
Cadafael Ynfyd of Cydewain
Maredudd ap Owain, King of Deheubarth
Eunydd son of Gwenllian
Sandde Hardd of Mortyn
The Floruit of Einion ap Seisyllt
The 5 Dafydd Llwyds of Llanwrin Parish
Cowryd ap Cadfan of Dyffryn Clwyd
Marchweithian, Lord of Is Aled, Rhufoniog
Osbwrn Wyddel of Cors Gedol
Bradwen of Llys Bradwen in Meirionydd
Ednowain ap Bradwen
Who Was Sir Robert Pounderling?
Sir Aaron ap Rhys
Eidio Wyllt - What Was His Birthname?
Ancestors and Children of the Lord Rhys

                                        WHO WAS ADDA ap IORWERTH?
                                                  By Darrell Wolcott
          Peter Bartrum's chart for Iorwerth Drwyndwn ap Owain Gwynedd [1] includes a brother of Llewelyn (who was to become Llewelyn the Great, King of Gwynedd) named Adda,  He cites two sources to support his family placement for this Adda, both of which involve a Marged ferch Gruffudd ap Gronwy who married y Pothan Flaidd, descended from Rhiryd Flaidd.
          Peniarth Ms 287, 254 (which Bartrum accepts as "correct") cites that marriage as shown on the left below, while the  Dwnn ii, 290 version (which Bartrum marked as "corrupt") is shown on the right:
 Iorwerth Drwyndwn                                     Adda
             l                                                        l
            Adda                      Rhiryd Flaidd                    Ifor   
             l                            l                           l
       Gronwy                   Madog                  Gronwy       Rhiryd Flaidd
             l                            l                           l                 l
      Gruffudd                  Rhiryd                  Gruffudd     Rhiryd Fychan
             l                            l                           l                 l
        Marged=====Y Pothan Flaidd             Marged==Y Pothan Flaidd
          We believe both citations contain errors in the ancestries of both the husband and wife and would correct the citations as follows::
                      1155  Iorwerth*                                Rhiryd Flaidd [2] 1155
                                    l                                                 l
                      1195   Adda                                          Madog  1190
                                    l                                                 l
                    1225   Gronwy                                        Rhiryd  1220
                                    l                                                 l
                     1255  Gruffudd                                 Rhiryd Fychan  1250
                                    l                                                l
                     1290  Marged==============y Pothan Flaidd [3]  1280 
             *This cannot be Iorwerth Drwyndwn ap Owain Gwynedd, a man who was born a generation earlier than 1155
          When we extend the chart with some of the families who descended from Y Pothan Flaidd, it will confirm our chart and its dating: 


(a)  This Cadwaladr was "ap Meurig (1200) ap Sir Robert (1165) ap Madog Marchog Dda (1135) ap Einion (1100) ap Sir Gwdrys/Goodrich (1070) ap William Lord D'elboeuf (1040), the latter being a son of the sister of William of Normandy, King William I of England.
(b)  Dwnn ii 290 & 334 all cite the marriage of Dafydd ap y Pothan Flaidd to Sioned ferch Dafydd Fychan ap Dafydd ap Cadwaladr. 
(c)  This Philip Dorddu is "ap Hywel (1290) ap Madog (1255) ap Hywel (1220) ap Gruffudd (1185) ap Gronwy (1150) ap Hoedliw Goch (1120) ap Rhys (1085) ap Hoedliw (1055) ap Cadwgan (1020) ap Elystan Glodrydd."
(d)  This Dafydd is "ap Ieuan Penaran (1305) ap Gruffudd (1270) ap Meilyr Penaran (1240) ap Cynwrig (1205) ap Genillin (1170) ap Cynwrig (1135) ap Genillin (1100) ap Meirion Goch" (1070) descended from Collwyn ap Tangno.
(e)  Dwnn i, 322 and Peniarth 135, 179 cite the marriage of Philip Middleton ap Rhiryd ap Dafydd ap y Pothan Flaidd to Angharad ferch Gruffudd Dwnn ap Philip Dorddu.
(f)  Pen 128, 661b cites the marriage of Dafydd Llwyd ap Gruffudd ap Dafydd to Gwen ferch Ieuan ap Dafydd.
          The Marged in our first chart DID descend from an Adda ap Iorwerth, but this was NOT Iorwerth Drwyndwn ap Owain Gwynedd, a man born c. 1128. We believe her ancestor was Adda (1195) ap Iorwerth (1155) ap Llywarch (1120) ap Bran of Anglesey, a man cited in Dwnn ii 265 & 268. 
          Once we detach Adda from Iorwerth Drwyndwn on Bartrum's chart, we are left with his son, Llewelyn, as an only child. [5]  

[1]  Bartrum's "Welsh Genealogies AD300-1400" on his chart "Gruffudd ap Cynan 4"
[2]  For our dating of Rhiryd Flaidd, see our paper on him at the following link:
[3]  There is no Welsh word "pothan".  We suggest it is either a poor phonetic spelling of "Boddar" meaning "a nuisance or pest" or of "boddran" meaning "to bother"
[4]  Vis Shropshire, 359 cites this Philip's mother as a daughter and heiress of Alexander Middleton of Shropshire.  Thereafter, that Middleton family was paternally descended from the Welshman, Philip ap Rhiryd ap Dafydd ap y Pothan Flaidd
[5]  Dictionary of Welsh Biography, page 417, asserts that Iorwerth Drwyndwn had but one son, Llywelyn.