Kevoth is a Blood Elk, one of the few tribes still loyal to Kevoth-Kul, also known as the Black Sovereign. Kevoth's father idolized Kevoth-Kul, as many Kellids did while the great warlord was uniting the tribes and marching on Starfall, and named his first son after the great warlord. The Blood Elks are one of the few tribes who still follow Kevoth-Kul.
Or put another way, the Blood Elks are one of the few tribes the increasingly paranoid, drug-addled Black Sovereign hasn't exiled from Starfall. In the eyes of some, this is no blessing. Like their master, the tribes of and around Starfall are indulging too much in alien substances and degenerate practices. Kevoth's grandfather was a harsh critic of what he saw as the end of the Blood Elk way of life.
Kevoth grew up listening to his grandfather's stories about the old ways. His father was often absent, commanding loyal Kellid bands and units of gearsmen against rebels, and his grandfather was Kevoth's main role model growing up. Unfortunately, Kevoth's grandfather spoke out one too many times or too loudly, as the gearsmen came for him one day and took him away.
Kevoth fought and managed to kill the Kellid tribesman in charge of the detail, but the gearsmen still managed to take his grandfather. Knowing they would come for him next, Kevoth fled for the wilds where the Black Sovereign's grip is not so tight. As he left he vowed to one day come back and free his grandfather or avenge his death.