I would think his family would make good on his orders, if they can find the information. If I were you, I would send a copy of my wins showing payment and address it to The Family of Charles Plaisance. along with a condolence card.
I read on another site that Charles fell in the garden and hit his head on a stone. So he was doing what he loved when the fatal injury occurred. I bought from Redcajun many times on the Lily Auction and am sorry to hear of his passing.
