Arthur the Grey

Arthur the Grey was the first High King of the Thunderlands, He was the leader of a group of early-human spellcasters the Grey Folk who voyaged into the stormy western islands and colonized them, subjugating the native Wood Elf and Dwarf populace. In so doing, Arthur would often claim native women as "prizes of war;" from a fishing village shaman on Stormrise Isle he sired the bastard son that would come to be known as Balthazar of the Black Thorn.
Much of the exact details of Arthur's life is shrouded in mystery. He had the look of a Human but may have been hundreds of years old at the time of the colonization, might even have been one of the first examples of that race as some records suggest his father was a dwarf and mother was a high elf. He had powerful magical abilities that may have been druidic in origin, and was likely a sorcerer as he passed some degree of that capability down to his many sons from his numerous wives.
Arthur spurned Balthazar, who was later likely the one who killed him in an act of revenge. His descendant, also named Arthur, took the throne after him with Balthazar as his advisor; Balthazar's divinely-granted terrmanatic powers allowed the colonizers to flourish and overtake the entire territory through use of nature magic and chimeras.