Idwal, Prince of N. Wales
- 942(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 Idwal, Prince of N. Wales [1] d. 942
- Avendreg, of Powys
- 2 Meyric, Of North Wales [1.1] d. 986
-
- 3 Idwal, Prince of N. Wales II [1.1.1] d. 996
-
- 4 Iago, Prince of North Wales III [1.1.1.1] d. 1039
[ =>]
- 4 Iago, Prince of North Wales III [1.1.1.1]
- 3 Idwal, Prince of N. Wales II [1.1.1]
- 2 Meyric, Of North Wales [1.1]
-
- 2 Iago Prince of North Wales [1.2]
-
- 3 Angharat, of North Wales [1.2.1]
- Hereford, Llydocca of
- 4 Hereford, Gwerfyl of [1.2.1.1]
[ =>]
- 4 Hereford, Gwerfyl of [1.2.1.1]
- 3 Angharat, of North Wales [1.2.1]
- 2 Iago Prince of North Wales [1.2]