Sir Edward Osborne (1530?–1591), was one of the principal merchants of London in the later sixteenth century, and Lord Mayor of London in 1583.

Duke of Leeds was a title in the Peerage of England. It was created in 1694 for the prominent statesman Thomas Osborne, 1st Marquess of Carmarthen, who had been one of the Immortal Seven in the Revolution of 1688. He had already succeeded as 2nd Baronet, of Kiveton (1647) and been created Viscount Osborne, of Dunblane (1673), Baron Osborne, of Kiveton in the County of York and Viscount Latimer, of Danby in the County of York, Earl of Danby, in the County of York (1674), and Marquess of Carmarthen (1689). All these titles were in the Peerage of England, except for the viscountcy of Osborne, which was in the Peerage of Scotland. He resigned the latter title in favour of his son in 1673. The Earldom of Danby was a revival of the title held by his great-uncle, Henry Danvers, 1st Earl of Danby.