The third son of Ninnian (JG-1) is the next branch along my JONES family tree. He is the 8th generation from Gadforch (JA-1). [The 32nd generation from Beli Mwar.] His wife was Efa (JH-18) [also spelled Eva] from Arwystli, which is a branch of the eldest son. Thus the baby of the family, Dingad (JD-3) marries into the family of the eldest, Gronwy (JD-1). [The eldest branch becomes known as the tribe of Elystan Glodrydd (JF-6) with a distinct history of its own.]
To place Jeuaf (JH-1) [also spelled Ieva ] in a larger picture, the following figure shows Ninnian(JG-1) in the family tree with his three sons. The two oldest sons are not named, and most likely died before 1146 AD. Jeuaf (JH-1) is united with the eldest branch which had settled in an area between the Wye and Severn Rivers. This would place the land of Dingad (JD-3), north of the Severn, in continued support of the eldest branch.