https://www.bbc.co.uk/programmes/b01mfw63
(not sure if it is regionally restricted) also:
https://www.youtube.com/playlist?list=PLZsy4Rj7uAiT2NL8RIgH0...
I remember my father saying how strange it was to meet HIS father for the first time when he was 5 - suddenly there was this stranger in the house.
My grandfather fortunately wasn't violent, or a drinker, but I never saw the same closeness between him and dad that I did between my mother and her parents.