CHARLES IV  . or III . (1604-1675), duke of Lorraine, was a son of Duke Francis II., and was born on the 5th of April 1604 . He became duke on the abdication of his father in 1624, and obtained the duchy of Bar through his marriage with his cousin Nicole (d . 1657), daughter of Duke Henry . Mixing in the tortuous politics of his time, he was in continual conflict with the crown of France, and spent much of his time in assisting her enemies and in losing and regaining his duchies (see LORRAINE) . He lived an adventurous life, and in the intervals between his several struggles with France fought for the emperor Ferdinand II. at Nordlingen and elsewhere; talked of succouring Charles I. in England; and after the conclusion of the treaty of Westphalia in 1648 entered the service of Spain . He died on the 18th of September 1675, leaving by his second wife, Beatrix de Cusance (d . 1663), a son, Charles Henry, count of Vaudemont (1642-1723) .