You are correct. Mary passed in 2009, but Pete Yarrow and Paul Stookey are still alive. Unless Mr. Seeger hacked them off, you can almost bet they'll be at the funeral. Fact is...it'll probably be a who's-who of American folk music
As for me....I love the music (overlooking some of the lyrics), but I really do not care about the late Mr. Seeger.
You can bet Bruce Springsteen will be there.