Assorted Tales of The Sinsar Boch
The Three Tribes and the Rise of Ainngai
In the BSF era when their lands were far reaching, the Tribes of Sinsar Boch were one simple, supersitious people with a semi-nomadic life style (moving their settlements when the lands became over worked).
The Fall killed many, leaving only the separated inhabitants of the high lands. The high lands became the area's signature island group, and the survivors became the three tribes each with their own land.
By 13 ASF, a religion had grown from the largest tribe's supersitions, headed by the prophet Ainngai, the man of the rivers. He preached the good life, rules meant to ensure the Gods did not rain any more vengence upon them, and made the pursuit of convertion noble. The river became a sacred symbol, a place of worship, the place of the ancestors. (It is common practice to dispose of the dead by covering them in regalia and floating them down the rivers and out to sea. To disturb the dead found at sea or washed up else where is considered a crime punishable by death and only a priest of the order may intervene.)
In death, his religion became known by his name. Needing something, anything to unite them, the people took to Ainngai like wild fire. By 38 ASF (after war) it had spread across the entirety of the Sinsar Boch and became one and the same with the notion of government.
While the Priests of Ainngai allow the three tribes to exist as they always had they millitantly pursue complience with their order. It is considered a great honour to be chosen to become a Priest of Ainngai and travel to lands unknown on the sacred mission. By necessity therefore they are master shipsmiths and though this should make them known across the Archipelago their numbers have always enough--by the nature of geography more than anything--that any major civilisation would have no trouble in disposing of them.
It is not unknown to find the followers of Ainngai on the main land, amongst the people of Auberyth and Lasuell alike.