Kadashan was born in Sitka Alaska where he graduated from a high school boarding school and attended Sheldon Jackson College. He finished his studies at Brigham Young University. Kadashan served as the elected president of his tribal government for twelve years and used his experience and knowledge to write for news papers, magazines and periodicals about tribal governments, the U.S. Constitution, and meshing Native American values with early American standards. His short story collection, Yaakwdaat Aya, and his novel When Raven Cries are stories about Tlingit lifestyle in a small village in Southeast Alaska. He lives as a retired commercial fisherman in Yakutat, Alaska