Yeah, the “British Common Law” people make me laugh. Don’t they realize that we fought a revolution against British Common Law
And therein lie the obfuscation, we did not fight a war against British ‘common’ law, we fought a war against British ‘feudal’ law. There is ‘common’ law and there are the laws of the king's prerogative, these are the feudal laws by which mankind becomes slaves to the king because the king is sovereign. Under common law, the sovereignty is in the people.
Common law is the ancient, unwritten law known as jus commune. Its existence predates that of any human king or nation.
Feudal law is the law created by any given king & his government known as jura corona or lex prerogative.
http://lonang.com/library/reference/tucker-blackstone-notes-reference/tuck-1e/
United States law is a combination of jus commune and jus corona. Congress was given no authority to regulate jus commune as those laws existed before any kings or nation, they are laws of our Creator that mankind was given no authority to regulate in His Name. So the ruse is, while there were laws common to Great Britain, those laws were not jus commune, they were jus corona written specifically for the kings territories.
Shalom