Estouteville - Bacon de Formigny

Looking for the ancestry of Jeanne d Estouteville, married in 1298 to
Guillaume Bacon, seigneur de Formigny, from the Bacon du Molay line.
Their daughter Jeanne Bacon de Formigny married in 1327 Jean III de
Malherbe, seigneur de Saint-Aignan-le-Malherbe (+ after 1358), leaving
many descendants among the good nobility in Basse-Normandie (roughly
today's Orne, Manche and Calvados).

Tim Powys-Lybbe...

For whatever it is worth, Charles Travis Clay's "Early Yorkshire
Charters", vol IX: "The Stuteville Fee", pub 1952 has a chapter, pp.
47-69, on the Norman Estouteville family. However this has no mention
of this Jeanne.

The affiliation of Jeanne with the House of Estouteville is not
questioned but rather her exact placement within that family. What we
know for sure is that she belonged to the main line and was the
daughter of a Robert d Estouteville. On that everybody agrees. But
which Robert ?

If I follow ES, the contemporary Estouteville line goes like this :

Tim Powys-Lybbe...

I give what Clay confirms as follows:

Henri d Estouteville (+ 1232)
m. Maud de Warenne, dowager countess of Eu

Tim Powys-Lybbe...

Confirmed by Clay.

Jean d Estouteville (+ 1258)
m. before1236, Agnes de Chateaudun

Tim Powys-Lybbe...

Confirmed by Clay.

Robert IV le Large d Estouteville (+ c. 1306)
m. Jeanne

Tim Powys-Lybbe...

Confirmed by Clay with some speculation that she might have been Joan,
dau. and heir of a William Talbot, a Norman.

However Robert IV m. (2) Eleanor de Genoure, widow of Alexander of
Baliol and they had (at least) a son John who inherited the English
estates.

Robert d Estouteville, sgr de Cleuville (+ before 1311 and probably
before his father)
m. before 1285, Alix Bertrand de Bricquebec

Tim Powys-Lybbe...

Confirmed by Clay; Robert inherited the Norman estates.

Robert V d Estouteville (+ 1333)

Tim Powys-Lybbe...

Confirmed by Clay.

m. Marguerite de Hotot

Tim Powys-Lybbe...

She was not mentioned by Clay.

If we accept the ES genealogy, my gess is that Jeanne d Estouteville
was either a daughter of Robert IV le Large and Jeanne or a
grand-daughter, therefore born to Robert d Estouteville de Cleuville
and Alix Bertrand de Bricquebec. The chronology would allow both
possibilities.

To complicate the matter, in some Estouteville genealogies Robert IV le
Large and Robert de Cleuville are sometimes merged in one character
called Robert Passemer, married once or twice. The same between Robert
de Cleuville and Robert V. The apparition of the nickname Passemer
(meaning something like seafarer) could indicate a crusader and
therefore provide additional clues for identification of the Roberts.
So what do you think.

Thank you in advance for your help and imputs

Jean Bunot