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Maredudd ap Owain, King of Deheubarth
Sandde Hardd of Mortyn
The Floruit of Einion ap Seisyllt
The 5 Dafydd Llwyds of Llanwrin Parish
Cowryd ap Cadfan of Dyffryn Clwyd
Osbwrn Wyddel of Cors Gedol
Bradwen of Llys Bradwen in Meirionydd
Who Was Sir Robert Pounderling?
Sir Aaron ap Rhys
Eidio Wyllt - What Was His Birthname?
Ifor Bach, Lord of Senghenydd
Ancestors and Children of the Lord Rhys

                                    BUELLT/FFERLYS DYNASTY
                                               CHART V
                             990  Elystan Glodrydd[1]
                               1020  Cadwgan[2]===Sian vz Brochwel
                                            l               ap Aeddon III  1035
                                            l                      CHART III
                 l                                     l                       l
     1050  Annes                  1050  Idnerth            Iorwerth  1055
                =                                    l                       l
      Llewelyn Fychan ap                    l                  Dyddgu   1085     
   Llewelyn Aurdorchog  1035            l                       =
             CHART I                             l          Llywarch ap Trahaearn
                                                      l                  CHART IV    1070
                                        1080  Madog
                                      l                                     l 
                      1113  Cadwallon                 1120  Dyddgu
                                      l                                    =
                       1142  Maelgwn                  Robert ap Llywarch  1110
                                      l                              CHART IV
                       1170  Maredudd
                        1205  Madog
                     1235  Einion Hen of Mochdre[3]
                         1270  Sian====Rhys ap Iorwerth Fychan  1265
                                                        CHART I
The Charts cross-referenced above can be seen by clicking on the appropriate links which follow the notes below
[1]  Elystan Glodrydd, heir of the Buellt Dynasty, took the neighboring kingdom of Fferlys from the king of Brycheiniog c. 1020.  The latter's ancestors had taken it earlier from ancestors of Elystan. The early claims that his godfather was Aethelstan, king of Wessex, are a myth; the latter died over 50 years before Elystan was born
[2] The marriage of Cadwgan with a lady of the First Powys Dynasty was arranged by Elystan in his alliance with the king of Powys, his powerful neighbor to the north
[3] Einion Hen (called "the old" since his son was also named Einion) lived at Mochdre in Ceri.  Both names suffered scribal corruption into "Einion Penn of Morchier".  Einion's line became extinct with his granddaughters and his half of Mochdre eventually went to Llewelyn, son of Einion Hen's brother Madog Fychan. 
[1] ABT 11 for the ancestry of Elystan Glodrydd
[2] Dwnn i, 313; Dwnn ii, 152: for the marriage of Cadwgan; Dwnn i, 139 also cites his marriage, but calls the lady "Elen"
[3] Montgomeryshire Collections, vol 7, pp 54/55 for the marriage of Annes ferch Cadwgan
[4] Dwnn ii, 24 for the marriage of Dyddgu ferch Idnerth
[5] ABT 14 for the marriage of Dyddgu ferch Madog
[6] Dwnn i, 111 for the marriage of Sian ferch Einion Hen of Mochdre; there was another Einion Hen in this extended family, but he held Cefnllys.  It was that man's great-grandson who married a Mochdre heiress and combined the two manors