The White Lion Society, "a society of friends of Her Majesty's College of Arms," has announced on its website (http://whitelionsociety.org.uk/) that former Garter Principal King of Arms, Sir Peter Llewelyn Gwynn-Jones, died in hospital on Saturday evening, August 21, 2010 following a stroke some three weeks ago.
I've done some looking about the web for any news on this, but the only thing I've been able to locate at this point is that the Times of London will publish an obituary on Tuesday, August 24.
I'm very sad to hear this. I was lucky enough to have had the opportunity some years back to meet with him in the Garter office at the College of Arms for a full hour. In addition to the pleasure of sitting in such historic surroundings, I learned a lot about his personal philosophy of heraldry and heraldic design.
I had hoped that he would have a long and productive retirement. I'm sorry that it seems to have been cut short this way.