See “Famous Maddoxes” on this website for biographies of those marked.


(“t” refers to title)


Kingdom of Powys in NE Wales

(mostly today’s Montgomeryshire)


(see below for Kingdom of Gwynedd)



Generation 1



b.         c. 1000 WLS

m.        Angharad, dtr. of Maredudd ab Owain of the Dinefwr dynasty of Deheubarth

t.          1063  In-law’s dynasty ended at assassination of Gruffydd ap Llywelyn & takeover by Harold Godwinson)





A1       BLEDDYN / BLETHYN (see B below)

A2       Rhiwallon (1060 given Powys by Harold Godwinson), d. 1075



Generation 2


B         BLEDDYN / BLETHYN (same as A1 above)

b.         c. 1030 Deheubarth (S. Wales)

m.        Haer of Powys, dtr of Cillin

t.          1060 Harold Godwinson defeated the dynasty and gave Gwynedd (NW Wales) to Bleddyn (gave Powys in NE Wales to bro. Rhiwallon)

            1070 Ruled Powys upon brother’s death.  Then was     King/Prince of Gwynedd and Powys

d.         1075




B1       MADOC (See pedigree chart for MADOC OF LANCASHIRE, which includes historical documentary evidence for every generation)  

B2        Rhiryd (who had ch Madoc and Ithel)

B3        Ithel, d.c. 1090

B4       IORWERTH, (given 1/3 of Powys) (See pedigree chart for MADOC OF SHROPSHIRE, which includes historical documentary evidence for every generation)

B5        Cadwgan, given 1/3 of Powys

B6       MAREDUDD, given 1/3 of Powys (see C below)



Generation 3


C         MAREDUDD (same as B6 above)

b.         c. 1070 Powys            


t.          1075 given 1/3 of Powys to rule as vassal of Robert Belleme, 3rd Earl of Shrewsbury

d.         1132




C1       MADOC (see D below)



Generation 4


D         MADOC (same as C1 above)

b.         c. 1100 Powys                        

m.        Susanna, verch Owain Gwynedd, Prince of Gwynedd

d.         1160




D1       Llywelyn

D2       GRYUFFYDD MAELOR (see E below)

D3       Gwenllian, m. Rhys ap Gruffydd, prince of Deheubarth

D4       Marared, m. Iorwerth Drwyndwn (had son Llywelyn the Great b. 1173)



Generation 5


E          GRYUFFYDD MAELOR (same as D2 above)

b.         c. 1135 Powys






E1        MADOC (see F below)



Generation 6


F          MADOC (same as E1 above)

b.         c. 1165

m.        Isota

t.          1191 Prince of Powys Fadog (consolidated father’s possessions and named them Powys Fadog)

d.         1236




F1        GRUFFYDD MAELOR II (see G below)

F2        Gruffydd Lal, d. 1238

F3        Maredudd, d. 1256

F4        Hywel, d. 1268

F5        MADOC FYCHAN, d. 1269

F6        Angharad



Generation 7


G         GRUFFYDD MAELOR II (same as F1 above)

b.         c. 1200

m.        Emma, widow of Henry Touchet, dtr of Henry Audley

t.          1236 heriditary Prince of Powys Fadog

            1st Lord of Dinas Bran (Crow Castle)

d.         1269




G1       MADOC FYCHAN II, succeeded father in 1269, but killed in battle 1277

G2       Llywelyn

G3       Owain

G4       GRUFFYD FYCHAN I (succeeded his brother ~ G1) (see H below)



Generation 8


H         GRUFFYD FYCHAN I (same as G4 above)

b.         c. 1230


t.          1277 heriditary Prince of Powys Fadog (stripped of power 1284)

t.          Lord of Dinas Bran (Crow Castle)

d.         1289




H1       MADOC CRYPL (same as I below)



Generation 9


I.          MADOC CRYPL aka Madoc III (same as H1 above)



            1289 hereditary Prince of Powys Fadog

Lord of Dinas Bran (Crow Castle)

d.         1304




I 1        MADOC FYCHAN (see J below)

I 2        Gruffydd AP MADOC Fychan II (d. before father.  His son ~ same name ~ became prince upon Madoc Fychan’s death)



Generation 10


J          MADOC FYCHAN (same as I 1 above)



t.          1304 hereditary Prince of Powys Fadog

            Lord of Dinas Bran (Crow Castle)

d.         c. 1325




J1        GRUFFYDD I  (same as K below)



Generation 11


K         GRUFFYDD I (same as J1 above) (Some believe he was son of Madoc Crypl ~ J above, and others son of Gruffydd ap Madoc Fychan ~ J2 above)


m.        Elen, dtr of Thomas ap Llwelyn of Iscoed/Deheubarth

t.          1330 hereditary prince of Powys Fadog, Lord of Glyndyfrdwy and Lord of Cynllaith Owain

d.         1369




K1       MADOC, died young

K2       OWAIN AP GRUFFYDD / OWAIN GLYNDWR, b. 1354 (see L below)

K3       Lowry, m. Robert Puleston

K4       Isabel, m. Adda ap Iorwerth Ddu

K5       Gruffydd

K6       Tudor (killed 1406 at end of brother’s rule of Wales)

K7       Unknown dtr. m. John Hanmer (who pleaded poverty in 1411 after Owain’s war)



Generation 12


L          OWAIN AP GRUFFYDD / OWAIN GLYNDWR  / OWAIN IV (same as J2 above)

            See long article and pictures at

            Featured in Shakespeare’s “Henry IV” as a wild and exotic man.

            Today he is seen as the Father of Welsh Nationalism and on a par with King Arthur

            He was the last Prince of Wales

b.         1359 or 1369

m.        c. 1383 Margaret, dtr of Sir David Hanmer (d. in Tower of London bef. 1415)

t.          Hereditary Tywysog/Prince of Powys Fadog and Lord of Glyndyfrdwy

            c. 1383 Squire of Sycharth and Glyndyfrdwy.

1400 Prince of all Wales (1404 appointed a parliament independent of England)

d.         c. 1416.  (Disappeared 1412) maybe at his estate at Sycharth


CH:      (some not proven)


L1        Gruffudd b.c. 1390

L2        MADOC b.c. 1392

L3        Maredudd b.c. 1394

L4        Tomas b.c. 1396

L5        Tomas b.c. 1398

L6        John b.c. 1400

L7        Dafydd (David) b.c. 1402

L8        Alys (Alice) b.c. 1404, m. Sir Henry Scudamore in Kentchurch, Sheriff of Herefordshire

L9        Margaret b.c. 1406

L10      Isabel b.c. 1406

L11      Jonet b.c. 1406

L12      Catrin, b,c, 1408, m. Sir Edmund Mortimer, d. in Tower of London bef. 1415

L13      Elizabeth, b.c. 1410

L14      Jane, b.c. 1412



Kingdom of Gwynedd in NW Wales

(mostly today’s Carnarvonshire)


Inlaws of Powys Madoc Rulers



Generation 1



b.         c. 1000

m.        Ragnaillt of Dublin

t.          1023 King of Gwynedd

d.         1039




A1       GRUFFYDD (see B below)

Generation 2


B         GRUFFYDD (same as A1 above)

b.         c. 1050 Dublin, IRE

m.        Angharad verch Owain abs Edwin

t.          1075 attempted to take throne

t.          1081 King of Gwynedd one year

t.          c. 1093 attempted to take throne

t.          1101 King of Gwynedd

d.         1137




B1        Cadwallon, d. 1132

B2       OWAIN GWYNEDD (see C below)

B3        Cadwaladr, m. Alice de Clare, ruled part of Gwynedd 1137-1143

B4        Susanna, m. Madog ap Maredudd, Prince of Powys

B5        Gwenllian, m. Gruffydd ap Rhys, Prince of Deheubarth


Generation 3


C         OWAIN “GWYNEDD” and OWAIN I (same as B2 above)

b.         c. 1100 Gwynedd, WLS

m.        Gwladus Verch Llywarch

t.          1137 shared rule of Gwynedd with brother Cadwaladr

t.          1143 ruled Gwynedd alone

d.         1170




C1       Rhun (illegitimate)

C2       Hywel (illegitimate)

C3       Iorwerth “Drwyndwn” (with first wife Gwladys ferch Llywarch) (see D below)

C4       Maelgwn, Lord of Yns Mon

C5       Gwenllion

C6       Dafydd (with 2nd wife Christina ferch Gronw)

C7       Rhodri

C8       Angharad

C9       Margaret

C10     Iefan

C11     Cynan, b.c. 1138 (see DD Below)

C12     Rhirid (illegitimate)

C13     MADOC, b.c. 1140 (illegitimate)

C14     Cynwrig (illegitimate)

C15     Gwenllian (illegitimate – also same name as sister)

C16     Einion (illegitimate)

C17     Iago (illegitimate)

C18     Ffilip (illegitimate)

C19     Cadell (illegitimate)

C20     Rotpert (illegitimate)

C21     Idwal (illegitimate)

C22     Other dtrs.


Generation 4



D         IORWERTH “DRWYNDWN” (same as C3 above)

b.         Gwynedd, WLS

m.        Margred verch Madoc, Powys, WLS




DD1     Llewelyn “the Great” b. 1173, d. 1240, King of Gwynedd

DD      CYNAN II (same as C5 above)

b.         c. 1125 Gwynedd, WLS


t.          Lord of Meirionydd





D1       Gruffudd b.c. 1165, d. a monk in 1200

D1       MAREDUDD b.c. 1150 (see E below)

Generation 5


E.         MAREDUDD (same as D2 above)

b.         c. 1150


t.          Lord of Meirionydd





E1        LLYWELYN, b.c. 1175 (see F below)



Generation 6


F          LLYWELYN (same as E1 above)

b.         c. 1175


t.          Lord of Meirionydd





F1        MAREDUDD, b.c. 1200 (see G below)

F2        MADOC, b.c. 1205

F3        Dafydd, b.c. 1210

F4        Llywelyn, b.c. 1215


Generation 7


G         MAREDUDD (same as F1 above)

b.         c. 1200


t.          Lord of Meirionydd

d.         1255




G1       LLYWELYN b.c. 1225 (see H below)


Generation 8


H         LLYWELYN (same as G1 above)

b.         c. 1225


t.          Last vassal Lord of Meirionydd

d.         1263




H1       MADOC b.c. 1250, death unknown (had two sons whose fates are yet unknown ~ Maredudd and Hywel)

H2       Dafydd

H3       Llywelyn

H4       Maredudd