House Douglas of Dalkeith
Cadet branch of the House of Douglas
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House Douglas of Dalkeith
Lords of Dalkeith, Hermiston
and Liddesdale
Lords Dalkeith and Aberdour
Earls of Morton
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House Douglas of Pumpherston
Lords of Pumpherston and Lauriston Castle
Issued from Frisken, younger son of Andrew Douglas of Hermiston -
House Douglas of Mains
Lords of Mains, Wakefield, Dounteray and Ferguston
Issued from Nicholas, younger son of John Douglas of Lothian -
House Douglas of Moffat
Lords of Borg, Corehead
and Moffat
Issued from Henry, 3rd son of James Douglas, 1st Lord Dalkeith -
House Douglas of Lochleven
Lords of Lugton, Lochleven
and Dalmahoy
Lords Aberdour
Earls of Morton
Issued from Henry, younger son of John Douglas of Lothian
Earls of Morton from 6th Earl onward -
House Douglas of Whittinghame
Lords of Whittinghame
and Stoneypath
Issued from William, son of James Douglas, 1st Lord of Dalkeith from his 2nd marriage