Son of Patrick, earl of Dunbar (d.1248) (Familial relationship)
- Patrick (III), earl of Dunbar (d.1289)
- From Source
3/15/69 (Melr. Lib., no. 230)
- Firm date
- 29 August 1247 X 28 November 1247
- Dating Notes
- Feast of St John the Baptist, 1247 × royal confirmation (<em>Melrose Liber</em>, no. 231).