The next in line is Gruffydd (JJ-1). This would be Griffith in the English. [dd = th ] He is also identified as of Llwyn-Onn.
His wife is recorded as of the last line of the "Prince of Powys". Margaret (JJ-2) is her name. The name Margaret becomes one of the most common names among my JONES family. The next figure place some historical context to this period ca. 1170 - 1180 AD.
Gruffydd (JJ-1) would be born around 1150 AD. He is shown as the son of Iorwerth fychan (JI-1), and the next in line is given. A dating method is shown lower right for the generations "J", "K", and "L". It is a sliding scale over lapping at 50 year intervals. The name Gryffydd "Griffith" becomes one of those Welsh surnames yet to come.