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| | Duke of Roxburghe |
 | | Arms: Quarterly; 1st and 4th, grandquarters, quarterly 1st and 4th, vert, on a chevron, between three unicorns' heads erased, argent, armed and mained or, as many mullets, sable (for Ker); 2nd and 3rd, gules, three mascles or (for Weapont); 2nd and 3rd grandquarters, argent, three mullets azure (for Innes). |
 | | Sir Robert Ker was created Lord Roxburghe in the Peerage of Scotland in 1600. |
 | | Additional titles held by the Duke of Roxburghe: Marquess of Bowmont and Cessford (1707), Earl Innes (1837), Earl of Kelso (1707), Earl of Roxburghe (1616), Viscount Broxmouth (1707), Baron Roxburghe (1600), Baron Ker of Cessford and Cavertoun (1616). |
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