Iago ap Idwal Foel,, Joint King of Gwynedd
974 - 1039 (65 years)(
= Descendancy chart to this point, 
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- 1 Iago ap Idwal Foel,, Joint King of Gwynedd [1] b. 974 d. 1039
- Afandreg verch Gwair b. Abt 995 d. 17 Oct 1016
- 2 Crisli Verch Iago [1.1] b. 1012 d. 1060
- 2 King Cynan, of Gwynedd [1.2] b. Abt 1014 d. 1075
- Rhanullt Ragnhildr Olafsdotter b. 1025 d. 1076
- 3 Gruffydd ap Cynan [1.2.1] b. Abt 1045 d. 1137
- Angharad ferch Owain b. 1065 d. 1162
- 4 Yslani [1.2.1.1] b. Abt 1071 d. Abt 1171
- 4 Gwenllian ferch Gruffydd [1.2.1.2] b. 1085 d. Jan 1136
- 4 Gwenllian ferch Gruffydd [1.2.1.3] b. 1085 d. 1136
- 4 King Owain ap Gruffydd, of Gwenydd, North Wales [1.2.1.4] b. 1087 d. 28 Dec 1169
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- 4 Prince Owain Gwynedd Gruffydd [1.2.1.5] b. Abt 1087 d. 28 Nov 1170
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- 4 Elen [1.2.1.6] b. 1089 d. 1165
- 4 Elen [1.2.1.7] b. 1089 d. 1136
- 4 Merinedd [1.2.1.8] b. 1091 d. DECEASED
- 4 Susanna [1.2.1.9] b. 1095 d. 1165
- 4 Susanna Ferch Gruffydd Gwyned [1.2.1.10] b. 1095 d. 1165
- 4 Susanna ferch Gruffudd [1.2.1.11] b. 1095 d. Abt 1165
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- 4 Susanna verch Gruffydd [1.2.1.12] b. 1095 d. 1165
[ =>]
- 4 Susannah [1.2.1.13] b. 1095 d. UNKNOWN
- 4 Cadwaladr ap Gruffydd [1.2.1.14] b. 1096 d. Mar 1172
- 4 Cadwallon [1.2.1.15] b. 1097 d. 1137
- 4 Owain [1.2.1.16] b. 1100 d. Dec 1169
- 4 Membyr [1.2.1.17] b. 1114 d. Dec 1169
- 4 Rhael [1.2.1.18] b. 1116 d. DECEASED
- 4 Annes [1.2.1.19] b. Abt 1118 d. DECEASED
- 4 Annes [1.2.1.20] b. Abt 1118 d. DECEASED
- 4 Tudwal [1.2.1.21] b. Abt 1122 d. DECEASED
- 4 Margred [1.2.1.22] b. 1125 d. 1165
- 4 Yslani [1.2.1.1]
- 3 Prince Gruffydd ap Cynan, of Gwynedd [1.2.2] b. 8 Mar 1055 d. 1137
- Angarad Ferch Owain b. 1065 d. 1162
- 4 Gwenllian ferch Gruffydd [1.2.2.1] b. 1085 d. 1136
- 4 Owain Gwynedd [1.2.2.2] b. 1100 d. 28 Nov 1170
[ =>]
- 4 Gwenllian ferch Gruffydd [1.2.2.1]
- Angharad ferch Owain b. 1065 d. 1162
- 4 Yslani [1.2.2.3] b. Abt 1071 d. Abt 1171
- 4 Gwenllian ferch Gruffydd [1.2.2.4] b. 1085 d. Jan 1136
- 4 Gwenllian ferch Gruffydd [1.2.2.5] b. 1085 d. 1136
- 4 King Owain ap Gruffydd, of Gwenydd, North Wales [1.2.2.6] b. 1087 d. 28 Dec 1169
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- 4 Prince Owain Gwynedd Gruffydd [1.2.2.7] b. Abt 1087 d. 28 Nov 1170
[ =>]
- 4 Elen [1.2.2.8] b. 1089 d. 1165
- 4 Elen [1.2.2.9] b. 1089 d. 1136
- 4 Merinedd [1.2.2.10] b. 1091 d. DECEASED
- 4 Susanna Ferch Gruffydd Gwyned [1.2.2.11] b. 1095 d. 1165
- 4 Susanna ferch Gruffudd [1.2.2.12] b. 1095 d. Abt 1165
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- 4 Susanna verch Gruffydd [1.2.2.13] b. 1095 d. 1165
[ =>]
- 4 Cadwallon [1.2.2.14] b. Abt 1096 d. Mar 1132
- 4 Cadwaladr ap Gruffydd [1.2.2.15] b. 1096 d. Mar 1172
- 4 Cadwaladr ap Gruffydd [1.2.2.16] b. 1096 d. Mar 1172
- 4 Cadwallon [1.2.2.17] b. 1097 d. 1137
- 4 Owain [1.2.2.18] b. 1100 d. Dec 1169
- 4 Membyr [1.2.2.19] b. 1114 d. Dec 1169
- 4 Annes [1.2.2.20] b. Abt 1118 d. DECEASED
- 4 Annes [1.2.2.21] b. Abt 1118 d. DECEASED
- 4 Cadwallon AP GRUFFYDD [1.2.2.22] d. 1132
- 4 Yslani [1.2.2.3]
- 3 Gruffydd ap Cynan [1.2.1]
- 2 Tangwystl Verch Iago [1.3] b. 1020 d. 1075
- 2 Prince Cynan ab Iago, of North Wales [1.4] b. 1035 d. 1060
- + Ragnhild Olafsdottir b. 31 Oct 1024 d. 1055
- + Ragnhild Olafsdottir b. 31 Oct 1024 d. 1055
- 2 Crisli Verch Iago [1.5] d. 1060
- 2 Crisli Verch Iago [1.1]