Nielsen Hayden genealogy
Maredudd ap Bleddyn ap Cynfyn

( = Descendancy chart to this point,
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- 1 Maredudd ap Bleddyn ap Cynfyn [1] d. 1132
Hunydd ferch Einudd
- 2 Madog ap Maredudd, Prince of Powys Fadog [1.1]
d. 1160
Susanna ferch Gruffydd ap Cynan
- 3 Gryffydd "Maelor" ap Madog, Prince of Northern Powys [1.1.1]
d. 1191
Angharad ferch Owain
- 4 Madog ap Gruffudd Maelor ap Madog ap Maredudd ap Bleddyn [1.1.1.1]
d. 1236 [ =>]
- 4 Madog ap Gruffudd Maelor ap Madog ap Maredudd ap Bleddyn [1.1.1.1]
- 3 Gryffydd "Maelor" ap Madog, Prince of Northern Powys [1.1.1]
(Unknown wife or mistress of Madog ap Maredudd)
- 3 Gwenllian ferch Madog [1.1.2]
d. 1160
Rhys ap Gruffydd, King of Deheubarth b. Abt 1132 d. 24 Apr 1197
- 4 Gwenllian ferch Yr Arglwydd Rhys [1.1.2.1]
d. 1236 [ =>]
- 4 Gruffudd ab Yr Arglwydd Rhys [1.1.2.2]
d. 25 Jul 1201 [ =>]
- 4 Gwenllian ferch Yr Arglwydd Rhys [1.1.2.1]
- 3 Owain Brogyntyn ap Madog ap Maredudd ap Bleddyn, King of Powys [1.1.3]
- 3 Margred ferch Madog [1.1.4]
Iorwerth Drwyndwn ap Owain Gwynedd d. Abt 1174
- 4 Llywelyn Fawr ap Iorwerth [1.1.4.1]
b. Abt 1173 d. 11 Apr 1240 [ =>]
- 4 Llywelyn Fawr ap Iorwerth [1.1.4.1]
- 3 Gwenllian ferch Madog [1.1.2]
- 2 Gruffudd ap Maredudd [1.2]
Gwerful ferch Gwrgeneu
- 3 Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn [1.2.1]
b. Abt 1130 d. 1197
Gwenllian ferch Owain
- 4 Gwenwynwyn [1.2.1.1]
d. Abt 1216 [ =>]
- 4 Constance ferch Owain [1.2.1.2]
[ =>]
- 4 Gwenwynwyn [1.2.1.1]
- 3 Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn [1.2.1]
- 2 Madog ap Maredudd, Prince of Powys Fadog [1.1]