Locke argued that people have rights: to liberty, life, and property. These rights are the independent foundation of the laws in any society. And Britain wasn’t agreeing to these standards, while Americans wanted to see those natural rights be established.
His official title would have been the Chancellor of the German Reich, but what he was mostly known as, probably what you’re looking for, would be the German Führer. Führer translates to Leader or Guide.
It makes laws; powers include passing laws, originating spending bills (House), impeaching officials (Senate), in approving treaties (Senate).