From Wikipedia of the Dark Jedi Brotherhood, an online Star Wars Club

Born on Corellia, Valhavoc had an average childhood. Coming from a middle class family he had neither a life of privilege or poverty. He was raised by his father and half brother who is 8 years older than him. Valhavoc's father was a low level administrator working for a medium size starship manufacturer, which produced sensor arrays for the Republic Navy. His mother was never known to him. Eventually his brother became a Freighter Captain transporting raw materials for the same manufacturer as their father.