Chieftain

Northlander rank below Jarl. Chieftain is a hereditary title, but may be challenged by combat or skill. It is a gender neutral term. Typically all those who follow a chieftain are considered to be a part of the same clan.
Type
Nobility, Hereditary
Form of Address
My Lord, Your Lordship / My Lady, Your Ladyship / My Laird, Your Lairdship