Note: I had seen and reviewed the proposed duplicate/precursor question on freemen of the land but if you read my question a little more carefully you will hopefully see that mine seeks to go deeper into the issue than that one for manages to.
They have this idea that by claiming to be an agent of a corporate entity representing an individual in which the capacity of a crime might have perhaps been committed, they can get out of personal liability.
Presumably these terms like settler, agent, private individuals etc and corporate entities that can absorb liability have a basis in fact. For example, a plumber may operate in the capacity of an LLC to avoid personal civil (though probably not criminal) liability for any mishaps that may happen while on the job.
The difference however, being that the LLC must first be formally incorporated, or bureaucratically established, and it must be unambiguously understood from the outset which capacity the person is actually acting in, for example by making it completely clear in the contract what actual legal entity the contract being entered by the consumer is specifically with.
The sovereign citizen movement seems to favour a variation of this concept, in which the corporate-person liability shield behind which they seek to hide firstly does not need to be formally incorporated or registered with any sort of bureaucratic entity, secondly need not be unambiguously "donned" to be effective, ie it can be claimed to have been used post-facto, although it is unclear as to what the parameters of liability consequences might be faced by the corporate entity itself, and thirdly has the bonus quality of absorbing criminal liability.
They claim that in the tradition of old maritime courts, defendants' names are written in all capital letters, and that this specifically abstracts the maritime corporate trading entity from the private individual who ostensibly cannot be held fully liable for the actions of their crew or ship upon which they may not even be personally aboard.
The private individual's legal personality, it is claimed, is denoted by their name with initial capital letters and remaining lower case letters.
Does this theory have any basis in current or historical fact?