Sources

1) Source: The Henry Project . External Link
https://fasg.org/projects/henryproject/data/willi001.htm. Reference: William "the Conqueror" (Guillaume "le Conquérant") (Questionable reliability of evidence)
2) Source: The Henry Project . External Link
https://fasg.org/projects/henryproject/data/rober000.htm. Reference: Robert I "le Magnifique" ("the Magnificent") (Questionable reliability of evidence)
3) Source: The Ecclesiastical History of England and Normandy: Volume III "After Rollo, a succession of valiant dukes commanded the warlike Normans ; namely, William Longsword, Richard the elder, Richard II., son of Gunnor, and his two sons, Richard the younger and Eobert of Jerusalem, and then "William the Bastard" (Data from secondary evidence)
4) Source: The Ecclesiastical History of England and Normandy: Volume III "For Richard, son of Gonnor, and duke of Normandy, was father of Robert I., whose son was William the Conqueror, the father of Duke Robert, who was father of William the Clito. On the other side, Robert the archbishop and count, who was brother of Duke Richard, had a son named Richard, count of Evreux, which Richard had a daughter called Agnes, wife of Simon, who bore Bertrade, Fulk's mother, and whose daughter Sibylla was." (Data from secondary evidence)
5) Source: Reg.lat.1283.pt.A Various trees showing the Counts of Anjou and Flanders, including the top-right tree:1. Ingelgerus.1.1 Fulco Rusus.1.1.1 Widdo; 1.1.2 Ingelgerus; 1.1.3 Fulco Bonus.1.1.3.1 Widdo 1.1.3.2 Drogo 1.1.3.3 Gotfridus 1.1.3.4 Blanco.1.1.3.3.1 Maurice 1.1.3.3.2 Fulco 1.1.3.4.1 Constanca regina uxor Rober regis.1.1.3.3.2.1 Gottfridus 1.1.3.3.2.2 Ermengarde 1.1.3.4.1.1 Henricus Rex.1.1.3.3.2.2.1 Gaufridus 1.1.3.3.2.2.2 Fulco 1.1.3.3.2.2.3 Hildegarde.. External Link
https://digi.vatlib.it/view/MSS_Reg.lat.1283.pt.A/0140. Reference: Folio 65v - Genealogia Comitis Andev (Data from direct source)
6) Source: Prospography of Anglo Saxon England "Adelida 2 (Female) - countess of Aumale, d. 1083, half-sister of William 1 and daughter of Robert 4; Adeliza or Adelaida.". External Link
https://pase.ac.uk/jsp/DisplayPerson.jsp?personKey=18919 (Data from secondary evidence)
7) Source: Chronica de gestis consulum Andegavorum "Robert died while traveling through Bithynia." (Data from secondary evidence)
8) Source: Gesta Regum Anglorum "Henricus, junior filius Willelmi magni, natus est in Anglia anno tertio postquam pater eam adierat" (Data from direct source)
9) Source: The Ecclesiastical History of England and Normandy: Volume III "At the same time, Stephen, count de Blois, son of Theobald, count de Chartres, who was son-in-law of "William, king of England, took the cross and departed for Jerusalem" (Data from secondary evidence)