 
| Type | Valeur | 
|---|---|
| Titre | Counts of Flanders in The Guinness Book of Kings, Rulers & Statesmen, pg. 22 [See document in the Memories section] | 
| The Guinness Book of Kings, Rulers & Statesmen, pg. 22 | 
| Counts of Flanders in The Guinness Book of Kings, Rulers & Statesmen, pg. 22 [See document in the Memories section] |