Madryn

Madryn is an old Welsh word for a fox and was a sort of a nickname used by an old friend (Hello Edric if you are reading this) in very specific circumstances, too complicated to go into here. I know little or nothing about actual foxes, they may be very straight-forward, uncomplicated animals in reality but their reputation for deviousness made me think this might be a suitable alias for a crossword setter and I have always enjoyed the idea of having a secret identity.