- Born on August 24, 1198 in Haddington
- Deceased on July 6, 1249, at the age of 50 years
Parents
- Guillaume Ier de Dunkeld, William the Lion (c. 1143 - 1214), King of Scots
- Ermengarde de Beaumont-au-Maine
Family
- Married on June 19, 1221, with Joan Plantagenêt (1210 - 1238)
- Married on May 15, 1239, with Marie de Coucy (bef. 1212 - bef. 1251), issuing
- Alexander (1241 - 1286)