fauntleroy doctrine
Fauntleroy doctrine. The principle that a state must give full faith and credit to another state’s judgment if the other state had proper jurisdiction, even though the judgment is based on a claim that is illegal in the state in which enforcement is sought. Fauntleroy v. Lum, 210 U.S. 230, 28 S.Ct. 641 (1908). [Cases: Judgment 815, 817. C.J.S. Judgments §§ 965, 967, 969–979.]