Rock·ing·ham 
(rŏkĭng-əm, -həm), Second Marquis of. Title of Charles Watson-Wentworth. 1730-1782.
(rŏkĭng-əm, -həm), Second Marquis of. Title of Charles Watson-Wentworth. 1730-1782. British politician who served as prime minister (1765-1766 and 1782), repealed the Stamp Act (1766), and favored American independence.