King Henry II  

1133 – 1189 (Life Span)

1154 - 1189 (Reign as King)

King Henry II is regarded as the instigator of the modern judicial system in England. His reign saw significant legal changes, greatly expanding the role of royal justice, and  producing a more coherent legal system, which is considered to have laid the basis for English Common Law.David Hume argued that Henry's reign was pivotal to creating a genuinely English monarchy and, ultimately, a unified Britain.