CREQUY, CHARLES I. DE BLANCHEFORT, MARQUIS DE, prince de Poix, duc de Lesdiguieres (1578-1638), marshal of France, was a member of a French noble house which took its name originally from a small lordship in the Pas-de-Calais. He saw his first fighting before Laon in 1594, and was wounded at the capture of Saint Jean d'Angely in 1621. In the next year he became a marshal of France. He served through the Piedmontese campaign in aid of Savoy in 1624 as second-in-command to the constable, Francois de Bonne, duc de Lesdiguieres, whose daughter Made leine he had married in 1595. He inherited in 1626 the estates and title of his father-in-law, who had induced him, after the death of his first wife, to marry her half-sister Francoise. He was also lieutenant-general of Dauphine. In 1633 he was ambassador to Rome, and in 1636 to Venice. He fought in the Italian campaigns of 163o, 1635, 1636 and 1637, when he helped to defeat the Spaniards at Monte Baldo. He was killed in an attempt to raise the siege of Crema, a fortress in the Milanese. He had a quarrel extending over years with Philip, the bastard of Savoy, which ended in a duel fatal to Philip in 1599; and in 162o he defended Saint-Aignan, who was his prisoner of war, against a prosecution threatened by Louis XIII. Some of his letters are preserved in the Bibliotheque Nationale in Paris, and his life was written by N. Chorier (Grenoble, 1683).