Family: 2nd Earl of Douglas James Douglas / Isabella Stewart (F331)
 | 1st Earl of Douglas-Mar William Douglas (1327-1384) 
|
Countess of Mar Margaret of Mar ( -1391)
|
Countess of Mar Isabel Douglas (1360-1408)  |
 | King of Scots Robert II of Scotland (1316-1390)
|
| Elizabeth Mure (1320-1355)
|
 | King of Scots Robert III of Scotland (1337-1406) |
| Lord of Fife Walter Stewart (1338-1362) |
| Earl of Buchan Alexander Stewart (1343-1405) |
| Elizabeth Stewart (1351- ) |
 | 2nd Earl of Douglas James Douglas (1358-1388)
|
| 1st Baron of Drumlanrig William Douglas (1374-1427) |
