I found out on January 29th. I had been given the Knightmare Boardgame for Xmas, and wanted to add the signatures of the cast to it. I reached out to Clifford on Social Media, only to receive a message from his son informing me that he was replying on behalf of his dad who passed away on 4th Jan. That's how I found out, and I was completely mortified.
Alongside Treguard, Lord Fear and Motley, Hordriss was one of the biggest mainstays and most iconic characters in the whole game. Seeing him develop through the series was a really interesting point of observation, and I will miss him terribly.
Thank you Clifford. You're a Legend.