Margaret de Brus
- Bef 1307( = Descendancy chart to this point, = Expand, = Collapse)
- 1 Margaret de Brus d. Bef 30 Jan 1306/07
- Robert de Roos d. Bef 20 Apr 1274
- 2 Robert de Roos
- 2 William de Roos d. Bef 12 Mar 1309/10
- Elizabeth
- 3 Thomas de Roos Baron of Kendal b. Abt 1307
- de Preston
- 4 John de Roos [ =>]
- de Preston
- 3 Thomas de Roos Baron of Kendal b. Abt 1307
- Elizabeth
- Robert de Roos d. Bef 20 Apr 1274