"NATURal rights" are either given by nature or god. "Nature" is the root word of "natural". :p
In order for Rothbard to have plagiarized from Rand she would have had to been some kind of founder of rational ethics and natural law. Unfortunately, Rand wasn't born until centuries after those philosophies first came about.
Rand was an antisocial methhead (literally). She was nutso and is famous for hating everybody, except herself of course. :>
~wobbles but doesn't fall down~