I'm not sure what Libertarianism has to do with anything. Once you have to call out an -ism to make your case, you are probably delving into a system of thought, a box, set up by, or later taken over by, the Cabal.

Natural Law is the set of limits that actually exist, built into the universe.

Trust Law is a set of false limits constructed by the Cabal and enforced by their systems of coercion. This coercive system is necessary in any man made law system because the false limits they create don't actually exist.

The separation of ownership into two categories (beneficiary and Trustee) comes from Trust Law. Natural Law says that there is no such separation.

Any other layer or label you want to put on top of that is just a smokescreen, likely of the Cabal's design to cover their fraudulent system of Law.