Argyll, Archibald Campbell, 1st duke of (ärgīl`), d. 1703, Scottish nobleman; eldest son of the 9th earl of Argyll. Having unsuccessfully sought favor with James II in order to recover the estates forfeited by his father, he supported the cause of William of Orange and formally offered William and Mary the crown of Scotland in 1689. Since his support was important to William, particularly as a basis for encouraging the submission of the clans, he was restored to his estates and made a privy councilor. He remained William's chief adviser on Scottish affairs and was made a duke (1701). Although two companies from his regiment were used to perpetrate the massacre (1692) of the MacDonalds of Glencoe, it is unlikely that he was in any way personally involved.