Gaien Arelius
Gaien Arelius is the Patriarch of the Arelius family — Blackflame Empire branch. He is the father of Cassias Arelius. He is somehow related distantly to Eithan Arelius and also somehow related to members of House Arelius, Rosegold continent.
For several years, Eithan stepped into the role of Patriarch, because he was more advanced than Gaien, an older Truegold, while Eithan was an Underlord. (see Advancement Level). However, at the end of book 4, Skysworn, Eithan was demoted and Gaien took up the reins again.
In book 10, Reaper, Gaien is introduced to adopted clan members, Wei Shi Lindon Arelius and Yerin Arelius.
Not only was he an adopted son of the Arelius family, but he was from this branch of the Arelius family. From a certain point of view, this was a huge honor to the current Patriarch, Gaien Arelius. Lindon had never met the man before, but Gaien was quick enough to bask in reflected glory. . .. Gaien Arelius was very important here, but Lindon didn’t care much for the aging Truegold. He had far more respect for Gaien’s son, the next heir to the Blackflame branch of the Arelius family: Cassias Arelius. Cassias sought out Lindon and Yerin after the major welcoming ceremony, his curly hair shining golden. He held a long, thin silver saber at his hip, and he bowed gracefully before the two of them. “I hoped I would be able to welcome you back someday,” he said. “But I never dreamed it would be like this.” (Reaper, ch 6)