|  |  | Alexander Comyn [Earl of Buchan] 1217– Elizabeth (Isabel) De Quincy 1220–1282 |  | | |  |  | William Comyn [Earl of Buchan] 1170–1233 Margaret Countess of Buchan 1185–1244 |  | | |  |  | Fergus Earl of Buchan 1170–1199 |  | | |  |  | Roger, Earl of Buchan 1140–1179 |  |  | 
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 |  | |  |  | Roger De Quincy [Earl of Winches 1174–1264 Helen (Elena) of Galloway 1208–1245 |  | | |  |  | Saher De Quincy [Earl of Winches 1150–1219 Margaret De Harcourt 1160–1234 |  | | |  |  | Robert De Quincy 1100–1198 Orabella Mrs De Quincy 1131– |  |  | 
 |  | |  |  | Robert BlanchmainsHarcourt [Earl of Leicest 1121–1190 Petronilla (Pernel) Grentmesnil 1134–1212 |  |  | 
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 |  | |  |  | Alan De Galloway [Lord of Gallowa 1186–1234 Helen De L' Isle 1174–1212 |  | | |  |  | Roland of Galloway 1164–1200 Elena (Helena) De Morville 1153–1217 |  |  | 
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