I am terribly sorry to hear about your granddad and also upset I missed your post. I must thank Zen Tzu for that, as I usually check new posts when I come in.
I thought I would mention that I spent my Italian 94-year old grandma's last night with her in hospital and she kept speaking both to us and to her mum, at the same time. Seconds before passing she suddenly looked upwards as if an invisible person she very much venerated had just walked into the room, she crossed herself quickly four or five times and died. We all felt somebody who was very important to her had come for her. It was a very comforting feeling to know she was not alone at that time.
Roberta Grimes has written a book on the subject and she says: "People in [a] pre-death stage often see people who don’t seem to be there. Those around them may think they are hallucinating, but in fact they being visited by predeceased loved ones. The visitors might be friends and relatives or white-robed angels or even friendly strangers. And they can be animals. One hermit who trusted no one else reportedly was met by his long-dead horse. [Your loved ones] may chat with these visitors who are invisible to the living, or they may lie staring at an empty corner because their visitors often appear in the upper corners of the room. There are rare occasions when psychic relatives sitting at a deathbed share in deathbed visions, but what is more common is for people near death to lie quietly and gaze at the corners of the room as they converse with visitors in their minds.
Occasionally [they] will have an actual glimpse of paradise. It will seem to them that one of the walls of the room has disappeared, and beyond the room they will see fields of flowers, snow-topped mountains, a lake, and even buildings. All that they see is intensely coloured, and it is dazzlingly, heart-stoppingly beautiful: the mountains are spectacular, the greenery is intense, and the flowers are in colors not seen on earth. There are reports of panoramic deathbed visions that lasted for days while the [...] person described what he was seeing.
A century ago, such reports were not unusual; but sadly, most of the terminally ill are so heavily sedated today that if they see anything of where they are going, usually it is just a glimpse [...] in the minutes before they die."
Thinking of you and your family at this time.