viscount of, a title in the peerage of Scotland, conferred 3d May 1673, on
Sir Thomas Osborne of Kiveton, Yorkshire, lord high treasurer of England,
(descended from Sir Edward Osborne, knight, lord mayor of London in 1582),
and after the revolution created marquis of Carmarthen (1689) and duke of
Leeds (1694), and now possessed by his descendant, George Godolphin
Osborne, eighth duke of Leeds (1859).