King of Deheubarth Maredydd Ab Owain
- 999( = Descendancy chart to this point, = Expand, = Collapse)
- 1 King of Deheubarth Maredydd Ab Owain [1] d. 999
-
- 2 Angharad [1.1]
- Llywelyn Ap Seisyll d. 1023
- 3 Gruffydd Ap Llywelyn [1.1.1] b. Abt 1007 d. 5 Aug 1063
- Edith of Mercia d. Aft 1070
- 4 Nesta Ferch Gruffydd [1.1.1.1] [ =>]
- 4 Maredudd Ap Gruffydd [1.1.1.2] d. 1069
- 4 Idwal Ap Gruffydd [1.1.1.3] d. 1069
- Edith of Mercia d. Aft 1070
- 3 Gruffydd Ap Llywelyn [1.1.1] b. Abt 1007 d. 5 Aug 1063
- Llywelyn Ap Seisyll d. 1023
- 2 Angharad [1.1]
-