Someone said :
Really need some good advice. A x good friend of mine I was friends with for years but we fell out with each other a few years ago we live next door to each other. But Dont have any contact or even look at each other. But his old fella has just passes away I'm wandering if I should go to the funeral home or just go to the mass
I would offer him condolences in person first, as a neighbor, as opposed to showing up uninvited and maybe unwanted like Twink did.
Don't make his grief about you.
He does not have a duty to accept your olive branch just because he is grieving, if you two have been unable to sort this out before. The only way to know if your gesture will help is to check it in private before making it in public.