The Queensberry line of the Douglas Family sprung from Sir William, a "natural" son of James, 2nd Earl of Douglas. From his father he inherited the old Mar Barony of Drumlanrig. William died circa 1421.

We take as our start point, Sir William, Lord of Drumlanrig

 

Lord (Laird) of Drumlanrig	Sir William Douglas	- 1427
2nd Baron of Drumlanrig	Sir William Douglas	c1358 - 1458
3rd Baron of Drumlanrig	Sir William Douglas	- 1464
4th Baron of Drumlanrig	Sir William Douglas	- 1484
5th Baron of Drumlanrig	Sir James Douglas	- 1498
6th Baron of Drumlanrig	Sir William Douglas	- 1513
7th Baron of Drumlanrig	Sir James Douglas	1498 - 1578
8th Baron of Drumlanrig	Sir James Douglas	- 1615
Earl of Queensbury	Sir William Douglas,	c1582 - c1639