JEANNIN, PIERRE (1540–1622), French statesman, was born at Autun. A pupil of the great jurist Jacques Cujas at Bourges, he was an advocate at Dijon in 1569 and became councillor and then president of the parlement of Burgundy. He opposed in vain the massacre of St Bartholomew in his province. As councillor to the duke of Mayenne he sought to reconcile him with Henry IV. After the victory of Fontaine-Française (1595), Henry took Jeannin into his council and in 1602 named him intendant of finances. He took part in the principal events of the reign, negotiated the treaty of Lyons with the duke of Savoy (see Henry IV.), and the defensive alliance between France and the United Netherlands in 1608. As superintendent of finances under Louis XIII., he tried to establish harmony between the king and the queen-mother.
See Berger de Xivrey, Lettres missives de Henri IV. (in the Collection inédite pour l’histoire de France), t. v. (1850); P(ierre) S(aumaise), Eloge sur la vie de Pierre Janin (Dijon, 1623); Sainte-Beuve, Causeries du lundi, t. x. (May 1854).