Henry II popularized trial by jury to attract cases to royal courts.

Evidence

A bait was needed with which to draw litigants to the royal courts; the King must offer them better justice than they could have at the hands of their lords. … Henry accordingly threw open to litigants in the royal courts a new procedure for them – trial by jury. — Winston Churchill, A History of the English-Speaking…, 343

Categorization

• corroborated: 2 independent passages support this claim — Winston Churchill, A History of the English-Speaking…, 343
• XREF: connects to: Henry II expanded the King’s Peace to solidify royal jurisdiction. — Winston Churchill, A History of the English-Speaking…, 342; Common-law courts arose from Norman efforts to extend royal authority.; Royal writs defined which disputes the King’s courts would hear — Henry M. Hart, Jr. and Albert M. Sacks, The Legal Process: Basic Problems in…, 1458