The Kennedy family has truly had it's share of sadness. As far as royalty, I wouldn't say so. They definitely are well-known and rooted in politics. The father was a whiskey runner/producer and hung with a very tough crowd. They're a very well connected family. It seems most Americans hold movie stars in higher regard, close to royalty. You should have seen the news coverage/fiasco about Michael Jackson. Of course, this is my opinion, only.
My thoughts and prayers to the surviving family and friends.