http://fmg.ac/Projects/MedLands/brittnpr.htm#EudesIPorhoetdied1092B

EUDES [I], son of JOSCELIN Vicomte [de Thro] & his wife --- (-after 1092). "Defuncto…Guethenoco…filius eius Goscelinus" donated property to the abbey of Redon, by charter dated [1066/82], witnessed by "filius eius Maenguis episcopus, et Rogerius et Eudo et alii filii eius"[291]. Vicomte de Porhoët. "Fredoricus vicecomes…Eudonis vicecomitis filii Goscellini…" witnessed the charter dated 14 Jul 1086 under which "Alanus Fergandus comes Britannie" confirmed the foundation of the priory of Saint-Florent sous Dol "in pago Redonensi"[292]. "Eudonus vicecomes" donated property to the abbey of Redon, for the soul of "coniunx…Anna" and with the consent of "filiis eius Goscelino primogenito", by charter dated 1092[293].

m firstly EMMA de Léon, daughter of ---. The primary source which confirms her parentage and family origin has not been identified.

m secondly ANNE, daughter of --- (-1092). "Eudonus vicecomes" donated property to the abbey of Redon, for the soul of "coniunx…Anna" and with the consent of "filiis eius Goscelino primogenito", by charter dated 1092[294].

Vicomte Eudes I & his first wife had five children:

1. JOSCELIN de Porhoët (-before 1114). "Eudonus vicecomes" donated property to the abbey of Redon, for the soul of "coniunx…Anna" and with the consent of "filiis eius Goscelino primogenito", by charter dated 1092[295]. He succeeded his father as Vicomte de Porhoët. Geslin de Bourgogne records that Vicomte Joscelin donated property to the church of Saint-Martin in the castle of Porhoét, assisted by his brothers "Guihenæus, Geoffroy et Alain", by charter dated 1108[296].

2. WIHENOC de Porhoët (-before 1114). Geslin de Bourgogne records that Vicomte Joscelin donated property to the church of Saint-Martin in the castle of Porhoét, assisted by his brothers "Guihenæus, Geoffroy et Alain", by charter dated 1108[297].

3. GEOFFROY de Porhoët (-1142). Geslin de Bourgogne records that Vicomte Joscelin donated property to the church of Saint-Martin in the castle of Porhoét, assisted by his brothers "Guihenæus, Geoffroy et Alain", by charter dated 1108[298]. He succeeded his brother before 1114 as Vicomte de Porhoët. "Gauffredus vicecomes de Porrehodio castro et fratres eius Alanus et Bernardus" reached agreement with the abbé of Marmoutiers regarding a donation by "frater suus Jostho vicecomes", by charter dated [1116][299]. "Gaufredus vicecomes filius Eudonis" donated property to the abbey of Saint-Martin, with the consent of "Alanum vicecomitem fratrem suum", by charter dated 1118, witnessed by "…Bernardus infans frater vicecomitis…"[300]. He was given a hundred in Devon by Henry I King of England, recorded in the 1131 Pipe Roll[301]. m HAWISE, daughter of ---. The primary source which confirms her marriage has not yet been identified. Geoffroy & his wife had five children:

a) EUDES [II] de Porhoët (-after 1180). "Gaufredus vicecomes, Eudo filius eius…" witnessed a charter dated 15 Jun 1130 under which Donald Bishop of Saint-Malo confirmed a donation to the monks of Saint-Martin de Josselin[302]. Comte de Porhoët. He succeeded in 1148 as EUDES Duke of Brittany, by right of his first wife.
- see below. b) JOSCELIN de Porhoët (-after 1153). "Eudo comes" founded the abbey of Notre-Dame de Lantenac by charter dated 1149, witnessed by "Josthos et Alanus fratres comitis, Alanus vicecomes de Monteforti…"[303]. "Eudo comes" confirmed a donation to Saint-Martin de Josselin, with the consent of "fratrum meorum…Joscii vicecomitis et Alani Ceoche", by charter dated 1153[304]. "Eudo comes" donated property previously donated by "dominus Gaufridus pater meus" to the priory of Josselin on the advice of "fratrum meorum Joscii vicecomitis et Alani Ceoche" by charter dated 1153[305].
c) ALAIN de Porhoët (-1190). "Eudo comes" founded the abbey of Notre-Dame de Lantenac by charter dated 1149, witnessed by "Josthos et Alanus fratres comitis, Alanus vicecomes de Monteforti…"[306]. "Eudo comes" confirmed a donation to Saint-Martin de Josselin made by “Dominus Gaufridus pater meus”, with the consent of "fratrum meorum…Joscii vicecomitis et Alani Ceoche", by charter dated 1153[307]. He established himself in England in or before 1172 as ALAN [I] la Zouche, the name presumably being based on “Ceoche” as recorded in the previously quoted charter. - ZOUCHE.
d) ETIENNE . "Eudo Britannie comes" donated property to Saint-Martin de Josselin, with the consent of "fratrum meorum…Joscii vicecomitis et Alani Ceoche", witnessed by "Roaldo Dongie vicecomitis, Henrico de Arundelle, ---dio de Leon, Gaufredo de Monteforti", with the consent of "Alano de Rohan cognato meo", by charter dated 1164, witnessed by "…Stephanus frater meus…Guihomarus alterius filius de Leon…"[308].
e) AMICIE de Porhoët (-after Aug 1162). "Guillelmus Monfortensis dominus" founded Montfort abbey, with the consent of "uxore mea Amicia...filiis ac fratribus meis", by undated charter, which also records the donation made by “Amicia uxor mea”[309]. A charter records that "Gaufridus Junior filius Guillelmi domini Monfortensis" laid the first stone for Montfort abbey on 1 May 1152, that "Radulfus...maior fil. eiusdem Guill." laid the second stone, that “ipse Guillelmus” laid the third, and “Amicia uxor ipsius Guillelmi” the fourth, adding that on the first Sunday of August (ten years later from the context) “Amicia domina Monfortensis” donated property with the consent of “filiis suis Radulfo et Gaufrido”[310]. Her parentage is confirmed by a charter dated 1213 under which [her grandson] "Willelmus dominus Montiforten" confirmed donations to Montfort made by "antecessoribus meis...domino Gaufrido de Monteforti...W. avi mei", quoting a charter dated 1180 under which “Gaufridus dominus Montifortis sequens vestigial patris mei Willelmi” donated property with the consent of “uxore mea et filiis meis Rad. Will et Rolando...Eudone comite avunculo meo [identified as Eudes Comte de Porhoët, Duke of Brittany, see above]...Oliverio patruo meo”[311]. m GUILLAUME [I] Seigneur de Montfort, son of --- (-May 1157, bur Montfort abbey).

4. ALAIN de Porhoët (-[1127]). Geslin de Bourgogne records that Vicomte Joscelin donated property to the church of Saint-Martin in the castle of Porhoét, assisted by his brothers "Guihenæus, Geoffroy et Alain", by charter dated 1108[312]. "Gauffredus vicecomes de Porrehodio castro et fratres eius Alanus et Bernardus" reached agreement with the abbé of Marmoutiers regarding a donation by "frater suus Jostho vicecomes", by charter dated [1116][313]. Vicomte de Castelnoec. - VICOMTES de ROHAN.

5. BERNARD (-after 1118). "Gauffredus vicecomes de Porrehodio castro et fratres eius Alanus et Bernardus" reached agreement with the abbé of Marmoutiers regarding a donation by "frater suus Jostho vicecomes", by charter dated [1116], witnessed by "…Bernardus infans frater eorum…"[314]. "Gaufredus vicecomes filius Eudonis" donated property to the abbey of Saint-Martin, with the consent of "Alanum vicecomitem fratrem suum", by charter dated 1118, witnessed by "…Bernardus infans frater vicecomitis…"[315].

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Presumably the oldest, or oldest surviving legitimate, son.

Wikipedia: Eudo (or Eudes) I married Anne [or Emma] de Leon (1065-?). They had two children [who survived to adulthood], Vicomte Geoffrey de Porhoet (1092–1141) and Alain I de Rohan (1084–1147).

Contrary to popular legend, Eudo was not, and could not have been, a participant in the Norman Conquest of 1066; but he could have come over in the following decade or so to assist with pacification and settlement.

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http://newsgroups.derkeiler.com/Archive/Soc/soc.genealogy.medieval/...

http://www.martinrealm.org/genealogy/zouche.htm

http://www.armidalesoftware.com/issue/full/Thaler_545_main.html#N10

( http://homepages.rootsweb.ancestry.com/~cousin/html/p58.htm#i7011 )

from Compiler: R. B. Stewart, Evans, GA

( http://homepages.rootsweb.ancestry.com/~cousin/html/index.htm )