Litigants in medieval trial by battle could hire a professional to fight in their place, and institutions that litigated constantly — monasteries, cathedrals, towns — kept champions on retainer. England forgot to abolish the underlying right until it was invoked one last time: in Ashford v Thornton (1818), murder defendant Abraham Thornton lawfully demanded battle, his accuser declined to fight, and Thornton walked free. Parliament abolished trial by battle the next year.
Judicial champion no longer exists as a living trade. Here is what erased it, and which profession took on the work.
500 – 1500
Qadis, magistrates and itinerant justices
Three great professional traditions matured in parallel. The Islamic world salaried qadis in every major city, applying a jurists' law that the ruler did not write. China staffed its counties with scholar-officials selected by imperial examination, each serving as investigator, prosecutor and judge in one — Song-dynasty official Bao Zheng became the culture's immortal ideal of the incorruptible magistrate. In Europe, royal justices rode circuit from 1166, replacing trial by ordeal after the Church withdrew its priests in 1215, and slowly manufacturing England's common law as they went.
What else was happening then
1166
Henry II sends out the justices
The Assize of Clarendon dispatched royal justices on circuit through England's counties, backed by local juries of presentment that named suspects on oath. The travelling judges gradually welded regional customs into a single "common law," and their successors — the circuit judges of the common-law world — still ride versions of those circuits today.
1608
Coke tells the king he is under the law
When James I claimed he could withdraw cases from his courts and decide them personally, Chief Justice Edward Coke answered that cases are decided by the "artificial reason" of law, mastered only through long study, and quoted Bracton: the king ought to be under no man, but under God and the law. Dismissed in 1616, Coke fixed the idea that a judge's loyalty runs to law, not to the ruler who appoints him.
1701
The Act of Settlement grants tenure
England's Act of Settlement provided that judges hold office "during good behaviour" rather than at the monarch's pleasure, removable only on the address of both Houses of Parliament. Security of tenure — the structural guarantee that a judge cannot be sacked for an unwelcome ruling — became the exportable core of judicial independence, copied into constitutions worldwide.
1803
Marbury v. Madison invents judicial review
Chief Justice John Marshall held that the US Supreme Court could strike down an Act of Congress that conflicted with the Constitution — while carefully denying the plaintiff his remedy, so President Jefferson had nothing to defy. Judicial review spread across the world, most explosively after 1945, and made constitutional judges a check on every other branch of government.
Where that work lives now
The person societies trust to decide: from Hammurabi's stele to AI-scored bail hearings, the hardest disputes still end in front of one accountable human.
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