A Jarl is a member of an Amear tribe who was chosen as a Weagra for a task of great importance. They hold great sway over the tribe, and are considered the wisest in the ways of conflict and war. To be named a jarl is a thing of great honor to the Amear, a thing that comes to few, and is respected by all. Like many things in Amear life, the method of being named a Jarl is not defined, being a thing that grows from custom and is raised by events.
A Jarl has no special authority or power. They are by definition weagra, and as such they may speak at the wepontak. They are always sought out in times of crisis and often take the mantle of Weagra again for a short period, or they will recommend a younger weagra, who they feel is capable and skilled. This recommendation and advisement carries great weight in council.