My grandad died in 1960 and apparently my Gran didn't attend his funeral. I asked my mother if she had gone but she had no recollection - she would have been 32 at the time. I am assuming therefore that she didn't go as surely she'd have remembered her own father's funeral.
Reason I'm asking is that my Mum is still a bit peculiar about funerals. She always comes up with an excuse not to go to one, even if it's one of her closest friends, saying oh it's too far etc. etc. She'll only change her mind when she realises that me and my siblings will be attending and she can get a lift there -or realises how bad form it looks if we turn up and she doesn't-