Section UL: Descendants of Prince Cynan ap Iago

David Thaler
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Send questions and corrections to: dthaler@microsoft.com

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Generation One

1. PRINCE CYNAN AP1 IAGO of North Wales, Wales, United Kingdom was born between 995 and 1041, and died between 1054 and 1151. He married (WH-4) RAGNAILLT _____, daughter of (WH-3) King Olaf and (XL-2) Maelcorcre (_____). [2]
Child:
+2i.GRIFFITH2, PRINCE OF NORTH WALES, b. in 1055 in Dublin, Dublin, Ireland; d. in 1137; m. (NU-2) ANGHARAT OF TEGAINGL, daughter of (NU-1) Owain ap EDWIN.

Generation Two

2. GRIFFITH2, PRINCE OF NORTH WALES (Cynan ap IAGO1), son of (1) Prince Cynan ap1 and (WH-4) Ragnaillt (_____), was born in 1055 in Dublin, Dublin, Ireland[2], and died in 1137[2]. He married (NU-2) ANGHARAT OF TEGAINGL, daughter of (NU-1) Owain ap EDWIN. [5]
Child:
+3i.PRINCE OWAIN I3 GWINEDH of North Wales, d. in 1170; m. (BW-3) GLADYS _____, daughter of (BW-2) Llywarch ap and Dyddgu (of BUILTH) TRAHAERN.

Generation Three

3. PRINCE OWAIN I3 GWINEDH (Griffith2, Cynan ap IAGO1) of North Wales, son of (2) Griffith2, Prince of North Wales and (NU-2) Angharat (of TEGAINGL), was born between 1085 and 1115, and died in 1170. He married (BW-3) GLADYS _____, daughter of (BW-2) Llywarch ap and Dyddgu (of BUILTH) TRAHAERN. [6]
Child:
+4i.PRINCE IORWERTH "DRWYNDWN" AP4 OWAIN, b. in 1145 in Aberffraw Castle, Aberffraw, Isle of Anglesey, Wales; d. about 1184; m. about 1163 MARGRED VERCH MADOG of Montgomery, Wales, b. about 1129.

Generation Four

4. PRINCE IORWERTH "DRWYNDWN" AP4 OWAIN (Owain I GWINEDH3, Griffith2, Cynan ap IAGO1), son of (3) Prince Owain I3 and (BW-3) Gladys (_____), was born in 1145 in Aberffraw Castle, and died between 1189 and 1194. He married about 1163, MARGRED VERCH MADOG of Montgomery, who was born about 1129. [1, 3]
Child:
+5i.LLEWELYN AP5 IORWERTH, PRINCE OF NORTH WALES, b. in 1173 in Aberffraw Castle, Caernarvon, Wales; d. on 11 April 1240 in Aberconwy, Arllechwedd Isaf, Caernarvon; m. (1) after 16 April 1205 in England, United Kingdom (QG-24) PRINCESS JOAN OF WALES of London, Middlesex, England, b. about 1188, d. in Aberconwy in 1236/7[2], daughter of (QG-20) John I "Lackland", King of England and Clemence (_____); m. (2) TANGWYSTL _____.

Generation Five

5. LLEWELYN AP5 IORWERTH, PRINCE OF NORTH WALES (Iorwerth "Drwyndwn" Ap OWAIN4, Owain I GWINEDH3, Griffith2, Cynan ap IAGO1), son of (4) Prince Iorwerth "Drwyndwn" Ap4 and Margred Verch (MADOG), was born in 1173 in Aberffraw Castle, Caernarvon, and died on 11 April 1240 in Aberconwy. He married (1st) in England, after 16 April 1205, (QG-24) PRINCESS JOAN OF WALES of London, daughter of (QG-20) John I "Lackland", King of England and Clemence (_____), who was born about 1188, died in 1236/7 in Aberconwy[2], and was buried in Llan-Faes, Dindaethwy, Isle of Anglesey. He married (2nd) TANGWYSTL _____. [7, 15, 18, 12, 1]
1173-1240, Prince of North Wales
Children of: Llewelyn ap5 IORWERTH, Prince of North Wales and Princess Joan of WALES:
6i.HELEN6 _____.
7ii.MISS VERCH LLYWELYN of Caernarvon, b. about 1214.
+8iii.ELEN (HELEN) VERCH LLEWELYN Of Caernarvon, b. about 1206; d. before 24 Oct. 1253 of Chester, Cheshire, England; m. (AFZ-8) ROBERT DE QUINCY, d. in 1257[2], son of (AFZ-3) Saher IV, 1st Earl of Winchester.
9iv.ANGHARAD VERCH LLYWELYN , b. about 1212.
10v.DAFYDD AP LLYWELYN, PRINCE OF NORTH WALES , b. about 1209; d. in March 1246.
+11vi.MARGARET LLEWELLYN , b. about 1210; d. after 1263 in Clifford Castle, Herefordshire, England; m. (1) (GA-2) JOHN DE BRAOSE of Bramber, Sussex, England, d. on 18 July 1232[10], son of (GA-1) William and Matilda (de FAY) BRAOS; m. (2) about 1232 (Q-62) WALTER DE CLIFFORD of Clifford Castle, Clifford, Herefordshire, b. about 1186, d. in Clifford Castle, Clifford in 1263/4, son of (Q-44) Walter de and (LL-2) Agnes de (CUNDY) CLIFFORD.
12vii.GWENLLIAN "LAS" VERCH LLYWELYN Of Caernarvon, b. about 1207.
+13viii.GLADYS DHU, d. in 1251; m. in 1230 (ABX-5) RALPH DE MORTIMER, BARON OF WIGMORE of Wigmore, Herefordshire, d. on 6 Aug. 1246[17], son of (ABX-4) Roger, Baron of Wigmore and (OO-12) Isabel (de FERRERS).

Generation Six

8. ELEN (HELEN) VERCH6 LLEWELYN (Llewelyn ap IORWERTH5, Iorwerth "Drwyndwn" Ap OWAIN4, Owain I GWINEDH3, Griffith2, Cynan ap IAGO1) Of Caernarvon, daughter of (5) Llewelyn ap5, Prince of North Wales and (QG-24) Princess Joan (of WALES), was born about 1206, and died between 1218 and 24 Oct. 1253 of Chester. She married (AFZ-8) ROBERT DE QUINCY, son of (AFZ-3) Saher IV, 1st Earl of Winchester, who died in 1257[2]. [1, 4]
Child: See (AFZ-8) Robert de QUINCY
11. MARGARET6 LLEWELLYN (Llewelyn ap IORWERTH5, Iorwerth "Drwyndwn" Ap OWAIN4, Owain I GWINEDH3, Griffith2, Cynan ap IAGO1) Of Caernarvon, daughter of (5) Llewelyn ap5, Prince of North Wales and (QG-24) Princess Joan (of WALES), was born about 1210, died between 1263 and 1330 in Clifford Castle, Herefordshire and was buried in Priory Church, Aconbury, Herefordshire. She married (1st) (GA-2) JOHN DE BRAOSE of Bramber, son of (GA-1) William and Matilda (de FAY) BRAOS, who died on 18 July 1232[10]. She married (2nd) about 1232, (Q-62) WALTER DE CLIFFORD of Clifford Castle, Clifford, son of (Q-44) Walter de and (LL-2) Agnes de (CUNDY) CLIFFORD, who was born about 1186, died in 1263/4 in Clifford Castle, Clifford, and was buried in Dore Abbey, Herefordshire[16]. [9, 14, 1]
There has been some argument as to the identity of the mother of Margaret. However, Weis (in Ancestral Roots) has seen no evidence to convince him that she was not the Princess Joan. [2]
Child of: Margaret6 LLEWELLYN and John de BRAOSE: See (GA-2) John de BRAOSE

Child of: Margaret6 LLEWELLYN and Walter de CLIFFORD: See (Q-62) Walter de CLIFFORD
13. GLADYS6 DHU (Llewelyn ap IORWERTH5, Iorwerth "Drwyndwn" Ap OWAIN4, Owain I GWINEDH3, Griffith2, Cynan ap IAGO1), daughter of (5) Llewelyn ap5, Prince of North Wales and (QG-24) Princess Joan (of WALES), was born between 1207 and 1227, and died after 1 Jan. 1282. She married in 1230, (ABX-5) RALPH DE MORTIMER, BARON OF WIGMORE[17, 11] of Wigmore, son of (ABX-4) Roger, Baron of Wigmore and (OO-12) Isabel (de FERRERS), who died on 6 Aug. 1246[17], and was buried in Wigmore[17]. [17, 8, 13, 11]
Weis (1992) says "Her mother was not Joan, but a mistress named Tangwystl.", but Richardson (2004) provides evidence proving her mother was indeed Joan. [8, 17]
Child: See (ABX-5) Ralph de MORTIMER, Baron of Wigmore


1. The Church of Jesus Christ of Latter-day Saints, "Ancestral File (R)", Copyright (c) 1987, June 1998, data as of 5 January 1998.
2. Frederick Lewis Weis, "Ancestral Roots of Certain American Colonists", 7th ed. (Baltimore: Genealogical Publishing Co., 1999).
3. Ibid., (176-6).
4. Ibid., (236-8).
5. Ibid., (239-5).
6. Ibid., (239-6).
7. Ibid., (27-27+, 176-7, 236-7).
8. Ibid., (27-28).
9. Ibid., (29A-28).
10. Ibid., (29A-28+).
11. W. H. Turton, "Plantagenet Ancestry" (Baltimore: Genealogical Publishing Co., 1928), 76.
12. Ibid., 76, 119.
13. J. Orton Buck and Timothy Field Beard, "Pedigrees of Some of the Emperor Charlemagne's Descendants, Vol. III" (Baltimore: Genealogical Publishing Co., 1978), 15.
14. Ibid., 159.
15. Ibid., 159, 190.
16. David Clifford <clyfford@aol.com>, "David Clifford <clyfford@aol.com>" (private communication).
17. Douglas Richardson, "Plantagenet Ancestry" (Baltimore: Genealogical Publishing Co., 2004), 520.
18. Gary Boyd Roberts, "Royal Descents of 500 Immigrants" (Baltimore: Genealogical Publishing Co., 2002), 305, 308, 311, etc.