I remember when he arived on the Ponderosa wearing the red shirt and black Stetson hat (I suppose that was the producer's vision of a good guy bad a$$ which the Candy was brought onto the show to be). I know most people will probably remember David for his long run as the villanous-- married to just about every female character on the show-- Adam Chandler on All My Children. He was great in the role too.
I remember him way back to "Candy" on Bonanza. He did a good job, playing two parts on AMC. It's never easy to lose a loved one, but I think it's especially difficult around holidays. I'm sorry for his family, for the timing of his passing.