In his essay "Last Words of Great Men," Mark Twain quotes the dying words of

There's more than one person quoted--did you have something specific in mind? For instance, Marshal Neil's last words are quoted, but Twain also makes reference to Daniel Webster, Napoleon, John Quincy Adams, and a number of others.

If you read the piece at a site called online-literature dot com, one thing you will notice is that every single name quoted is highlighted, which makes it very easy to figure out who is being referred to. Good luck!