Ro'nac
From The Stargate Omnipedia
First Prime of Cronus, father of Teal'c. Ro'nac returned to his master in defeat, having fought a battle that could not be won. As punishment for his failure, Cronus reached into Ro'nac's symbiote pouch and crushed the Goa'uld within. The symbiote's natural poison secreted into his body and killed him.
Following his death Teal'c and his mother fled to Chulak.
DETAILS
PLAYED BY - Sean Millington
FIRST APPEARED - Crossroads
KEY EPISODES
Crossroads - While in a deep state of kelnorim Teal'c sees memories of his symbiote's queen, and the death of his father, Ronac.
Threshold - Teal'c remembers Apophis asking him of Ronac, who the god believed to be a coward, during his recession in the Rite of M'al Sharran.