My sincere condolences on your loss, as Bill was a kind and gentle man to so many of us. I was always impressed with his knowledge and championing of new technologies as well as being a voice for reason in education. Even when he was in great pain, he never wanted to be a hindrance, only wanting others to be comfortable and to be able to communicate and to find joy in life, even though it meant sitting on the floor on his part. Maybe now he will be raised up to sit at the head of the table.
We all will miss him in the days and years to come, but as I know he was suffering near the end, maybe your gift in return for his many kindnesses was to let him go when he needed to, hard as that must have been. I&m sorry I cannot be there as you celebrate his life and mourn his passing, but may you find comfort in the family that you make up together, each touched by his life in different ways. I will add my prayers to yours in the days ahead.