The Dyffryn family was a wealthy family in the Nilfgaardian province of Vicovaro. Many of the family members served the Empire during their lives: Ceallach was a seneschal at the court of the Emperor Emhyr var Emreis, while his sons Aillil and Cahir served in the army and in the Imperial Secret Service.
- Ceallach's three unnamed daughters
|Ceallach aep Gruffyd||Mawr|
|Cahir Mawr Dyffryn aep Ceallach||Aillil aep Ceallach||Dheran aep Ceallach||Unnamed daughter 1||Unnamed daughter 2||Unnamed daughter 3|