Common law
The common lawso named because it was "common" to all the king's courts across Englandoriginated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. The British Empire spread the English legal system to its historical colonies, many of which retain the common law system today. These "common law systems" are legal systems that give great precedential weight to common law, and to the style of reasoning inherited from the English legal system.
Uncommon Law
Uncommon Law is a book by A. P. Herbert first published by Methuen in 1935. Its title is a satirical reference to the English common law. The book is an anthology of fictitious law reports first published in "Punch" as Misleading Cases in which Herbert explores, as he saw it, rather absurd aspects of the law, and upholds his civil liberties with the protagonist Albert Haddock, representing Herbert's point of view, taking many to court. It includes perhaps the best-known of these cases, "The Negotiable Cow". Herbert himself said "Albert Haddock made his first public appearance, in "Punch", in 1924. I have always understood that I invented him: but he has made some disturbing escapes into real life".