Condolences offered. My dad passed some 5 years ago. I was thankful he was mobile and lucid until the end, when cancer overtook him. It is good you were there... good for him and you.
We carry the lives, of those gone on, within us. We are their eyes and ears, their words and acts. We are their honor. Let who they were, what they taught and believed, shine from within. Some are lucky to practice those teachings while they lived. If not, we are afforded, anew, the opportunity... each day.
We are their living epitaph.
Your B.O.B. now contains him. (Probably already did)