I'm sorry to hear of your dad's passing. My prayers are with you and your families during this hard time.
My favorite memory of Richard was when we had karaoke at the Simpson Home and he was with me at the microphone for (of course) Johnny Cash....and then he said "Ladies and gentlemen, my name is Johnny Cash" and he sounded exactly like him ! It was a fun moment in time, his eyes were lit with laughter, and everyone there loved it.
Hold on to your fun memories, and know he is in a better place where he can smile forever and always.
With love,
Jan