High Quality Content by WIKIPEDIA articles! The Duke of Roxburghe (pronounced "Roxbruh") is a title in the peerage of Scotland created in 1707 along with the titles Marquess of Bowmont and Cessford, Earl of Kelso and Viscount Broxmouth. John Ker, 5th Earl of Roxburghe became the first holder of these titles. The title is derived from Roxburgh in the Scottish Borders. The Duke has the subsidiary titles of: Marquess of Bowmont and Cessford (created 1707), Earl of Roxburghe (1616), Earl of Kelso (1707), Earl Innes (1837), Viscount Broxmouth (1707), Lord Roxburghe (1600), and Lord Ker of Cessford and Cavertoun (1616). All of the titles form part of the peerage of Scotland, with the exception the Earldom of Innes, which belongs to the peerage of the United Kingdom. The Duke's eldest son bears the courtesy title of Marquess of Bowmont and Cessford. The dukedom and its associated titles descend to heirs who shall inherit the earldom which in turn had a very specific line of descent. On the death of the 4th duke the titles became dormant as no one could prove their claim.