Cantrefi of Tegeingl
One of the smaller cantrefs of the Kingdom of Gwynedd, Tegeingl is a region in north-east Wales that was named after the Deceangli, a Celtic tribe of the Iron Age and Roman periods. Currently under the rule of Chief Llwarch ap Llwarch, Tegeingl has fallen on difficult times due to numerous Irish raids over the last ten years.
Like most of Wales in the 5th Century, the Cantrefi of Rhos utilizes Agnatic Elective Gavelkind as its succession law: The titles of the ruler are divided among his children and the primary heir, who is elected from among the members of the ruling dynasty. The law defaults to Primogeniture. You get no Prestige penalty for having unlanded sons and can have a 30% larger demesne. Destruction of titles unader any form of Gavelkind succession is not allowed. On succession in kingdoms and empires, new kingdoms might be created for younger sons if possible. Junior heirs always get the choice to declare independence without a war. Only males can inherit.