Douglas, Earls of Morton
Scottish nobility

The name was first recorded in 1248. Sir William Douglas, the Knight of Liddesdale (c.1300-1353), was assassinated by his kinsman, William, 1st Earl of Douglas. Sir James Douglas of Dalkeith married a daughter of James VI and I, and was created 1st Earl of Morton (1458). The earldom devolved the 3rd earl's youngest daughter's husband, the regent James Douglas Morton, and from him the present Earl of Morton is descended. James, 2nd Earl of Douglas and Mar, had an illegitimate son, Sir William Douglas of Drumlanrig, whose descendants were created viscounts of Drumlanrig (1628), earls of Queensberry (1633), marquises of Queensberry (1681), dukes of Queensberry (1683), earls of March (1697) and earls of Solway (1706). On the death of the 4th Duke of Queensberry (1810), the titles were split up among the Scottish nobility.