Aithos, 1st Grandmaster Sage
Aithos was the first Sage to lead the Amethyst Kindred out of exile. He is thought of as one of the greatest Master Sages to have ever lived. He wrote many books that are located in the libraries, including the Amethyst Kindred Chivalry Code and the 70 Passages of Wisdom. He died in the last battle of the War of Death at the end of the first age.

Fynyr, Hero of the Gemstone, Sage
Fynyr is a hero from another realm. He was involved in a troubling time of the second age, where a jealous king tried to have Fynyr killed in battle, and then tried to have Fynyr executed for treason. See 2nd Age story. After Fynyr succeeded in removing that jealous king from power, the Amethyst Kindred acknowledged Fynyr’s efforts with Fynyr becoming the first outsider gain the title of Sage.

Bollud, BladeMaster of the Autumn Citadel
In the 3rd Age, each of the seven strongholds of the Amethyst Kindred had a blademaster to see to it's defence and military tactics. Bollud has never been settled in this position, but would rather be a scout for the Amethyst Kindred. See 3rd Age story

Elion, Master Sage of the Autumn Citadel
In addition to a blademaster, each of the seven strongholds of the Amethyst Kindred had a Master Sage to see to the population's learning of Wisdom and Settling Major disputes. Both Elion and Bollud were given their positions after their predecessors had rebelled against the other Amethyst Kindred Strongholds. They were both required to learn their duties quickly, however their loyalty has brought respect back to the Autumn Citadel.

Aithuir, 14th Grandmaster Sage
Aithuir is the current Master Sage of the Amethyst Kindred, making him the ruler of their realm. He is seldom seen out of his realm unless a meeting needs to be arranged closer to another kingdom. He is said to be one of the wisest Master Sages to have ever lived, rivalling even Master Sage Aithos in wisdom.