Cahir Mawr Dyffryn aep Ceallach, or simply Cahir, was an intelligence officer of the Nilfgaardian Empire who hailed from Vicovaro. He was the son of Ceallach and Mawr, the brother of Dheran, Aillil and grandnephew to Assire var Anahid.
- See this subject on The Witcher wiki: Cahir Mawr Dyffryn aep Ceallach
- See this subject on The Witcher wiki: Cahir Mawr Dyffryn aep Ceallach (gwent card) card
- Gwent Update: March 23, 2017 Patch: Cahir ability changed: he now reactivates only your Leader's ability and lets your opponent draw a revealed Bronze card. He does nothing if your opponent has passed.