A branch of English law which developed hundreds of years ago when litigants would go to the King and complain of harsh or inflexible rules of common law which prevented "justice" from prevailing. For example, strict common law rules would not recognize unjust enrichment, which was a legal reliefa developed by the equity courts. The typical Court of Equity decision would prevent a person from enforcing a common law court judgment. The kings delegated this special judicial review power over common law court rulings to chancellors. A new branch of law developed knpown as "equity", with their decisions eventually gaining precedence over those of the common law courts. a whole set of equity law principles were developed based on the predominant fairness characteristic of equity such as "equity will not suffer a wrong to be without a remedy" or "he who comes to equity must come with clean hands". Many legal rules, in countries that originated with English law, have equity-based law such as the law of trusts and mortgage.