In "The Aristocracy of Norman England" (pp. 40-41, 79, 80, 83, 94) author Judith A. Green stated that Ralph the Staller, Earl of East Anglia is thought to be the husband of Eadgifu the Fair, partly because Count Alan the Red was granted lands belonging to the two certainly after 1075 and possibly as early as 1071.
Alan the Red was the 3rd cousin of Ralph the Staller's daughter in law, Emma Hereford. He was also the partner of Edith's daughter Gunhild of Wessex.
Raoul "le Guader" l'Anglais, comte d’Est Anglie (Norfolk et Suffolk)
Alain "Rufus" de Bretagne, lord of Richmond
Count Alan granted land to Edith the Fair, and was the successor of lands owned by Earl Ralph and Edith the Fair.
"King William appointed Ralph, son of Ralph the Staller, a Breton, as Earl in East Anglia. After his revolt in 1075 some of Earl Ralph's estates and those of Eadgifu the Fair in Suffolk passed to Count Alan of Brittany...[W]e know that after 1075 [Count Alan] was given lands belonging to Earl Ralph and Eadgifu the Fair."
On page 40, footnote 56, the author cited "The English Nobility under Edward the Confessor" (Oxford 1994) by P. A. Clarke, p. 57.
Unavailable for free online reading, I could only find a book review for it.
https://www.jstor.org/stable/44946225
NOTE: Judith A. Green refers to Ralph the Staller as "Earl Ralph". She stated on page 41, "The most prominent was Ralph, the 'staller' of King Edward and possibly the husband of Eadgifu the Fair.(ref. to fn 56) He was appointed Earl in East Anglia and was succeeded by his son Ralph."
Cawley on MedLands says of Earl Ralph: "He held extensive estates in Norfolk and Suffolk, although it is uncertain whether this was by royal grant or by inheritance from his wife's family. Seigneur de Gaël, in Brittany. William I King of England created him Earl of Norfolk and Suffolk in 1067. The Chronicon Centulense records a charter under which King William I confirmed donations to Saint-Riquier made by "le comte Raoul et Raoul son fils". m ---. The name of Ralph’s wife is not known. The Complete Peerage suggests that she was the sister of Godwin, a landowner in Norfolk[901]. Earl Ralph & his wife had two children: [Ralph and Alan]"
https://fmg.ac/Projects/MedLands/ENGLISH%20NOBILITY%20MEDIEVAL.htm#...
