Remi Villeroy

Remi is sorcerer who is on run because of witch hunts started after Loc Muinne, because of conconting poisonous potions, helping Lodge of Sorceresses sending them messages via megascope.

The Witcher 3: Wild Hunt
He find a hiding in house of decent lass Louisa at outskirts of Free City of Novigrad in Kingdom of Redania but Witch Hunters later found him there.

Geralt of Rivia can optionally help him with them and sends him to Triss Merigold. If Geralt do so, Remi to show him how he regrets his crimes and how he attend to give up of magic gives him perun, veles and chernobog runestones.