Ash Lorus is near the Thieve's Cave entrance south of Covengor. He’s after a thief who stole his ring. Offer your help and enter the cave. Slash through the Skeletons and Grand Skeletons then talk to Tyco Thorn (the thief). Tyco will give you the Family Ring and also unlocks the Clear out the cave sub-quest. To finish this quest, bring the ring back to Ash.