My grandfather has always been the calm one, sweet caring and the rational one. Now suddenly he has these episodes of anger that is completely irrational and completely out of character for him. I am doing everything I can to help him but he is stubborn, and nothing I do for him is right. He sees the situation the way he sees it and no other opinion or point of view should be considered as its wrong.
A few mates his own age.
I agree with Beatty that he is totally out of his comfort zone and a little time might help.
Congrats on your new home.
I'd probably be angry all day every day, not just in episodes. He will be grieving all he has lost. Give him time & kindness.