What is "marchmont"

Marchmont is a mainly residential affluent area of Edinburgh, Scotland. It lies roughly a mile to the south of the Old Town, separated from it by The Meadows and Bruntsfield Links. To the west it is bounded by Bruntsfield; to the south-southwest by Greenhill and then Morningside; to the south-southeast by The Grange; and to the east by Sciennes. The name derives from the wife of Sir George Warrender who was daughter to Hume Campbell of Marchmont. Marchmont is an archaic name for Roxburgh Castle, a now destroyed royal fortress in the Scottish marches.