Chris & Julie Petersen's Genealogy

Alan III "the Black' of Brittany

Male Bef 1100 - 1146  (> 46 years)

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  • Name Alan III "the Black' of Brittany
    Birth Bef 1100 
    Gender Male
    Death 15 Sep 1146  , Brittany, France Find all individuals with events at this location 
    Burial Bégard Abbey, Bégard, Côtes-d'Armor, Brittany, France Find all individuals with events at this location 
    Person ID I7110  Petersen-de Lanskoy
    Last Modified 21 Jun 2026

    Father Stephen of Brittany   d. From 21 Apr 1135 to 21 Apr 1136
    Mother Hawise
    Family ID F3213  Group Sheet  |  Family Chart

    Family Bertha of Brittany,   b. 1119   d. From 1162 to 1167 (Age 43 years)
    Family ID F3225  Group Sheet  |  Family Chart
    Last Modified 30 Jun 2026

  • Notes 
    • RESEARCH_NOTES:
      1. “Royal Ancestry: A Study in Colonial & Medieval Families,” Douglas Richardson (2013):
      “BERTHA OF BRITTANY, born about 1119. She married (1st) about 1137 ALAN III the Black, Count of Brittany, Earl of Richmond, seigneur of Tréguier, 2nd son of Stephen (or Etienne), Count of Brittany, by his wife, Hawise [see RICHMOND 4 for his ancestry]. He was born before 1100. They had one son, Conan (IV) [Duke of Brittany, Earl of Richmond] and two daughters, Constance (wife of Alan III, Vicomte of Rohan) and Enoguen (nun at St. Sulpice of Rennes). ALAN III, Count of Brittany, Earl of Richmond died in Brittany 15 Sept. 1146, and was buried at Begard. His widow, Bertha, married (2nd) in or before 1148 (as his 1st wife) EUDON II, Duke/Count of Brittany, Vicomte of Porhoët, seigneur of Josselin, Mohon, la Nouée, la Chèze, Loudeac, Pleucadeuc, Villejagu, etc., son of Geoffrey, Vicomte of Porhoët, by his wife, Hawise. They had one son, Geoffrey, and one daughter, Adelaide [Abbess of Fontevrault]. His wife, Bertha, was living in 1162, and died before 1167. Eudes married (2nd) in or before 1167 ALIENOR DE LEON, daughter of Guiomar, son and heir of Herve, Vicomte (or Count) of Leon. They had two sons, Eudon Fitz Count and Henri, and one daughter, Alix (wife of Guy Mauvoisin, Chev., seigneur of Rosny). Eudon, Count (or Duke) of Brittany, was living in 1185, and presumably died before 1195.
      Morice Méms. pour Servir de Preuves à l'Hist. de Bretagne 1 (1742): 37, 698, 706-707. Morice Histoire Ecclesiastique et Civil de Bretagne 1(1750): xvii-xviii (Counts of Penthievre ped), ]xx--xxi (Porhoet ped.). Grimaldi Origines genealogicæ (1828): 14. Delisle Chronique de Robert de Torigni 2 (1873):42. Eyton Court, Household & Itinerary of Henry II (1878): 157. Demay Inventaire des Sceaux de la Normandie (1881): 5 (equestrian seal of Eudon, Duke of Brittany dated 1155). Bull. & Mémoires de la Société Archéologique du Déartement d'Ille-et-Vilaine 17 (1885): 348-350 (charter dated 1153 of Count Eudon, to Saint-Martin of Josselin Priory; charter granted with consent of his brothers, Josce vicomte and Alan Ceoche; charter mentions his father, Geoffrey), 350-351, 352-353 (charter dated 1153 of Hoël II [Count of Nantes], son of Count Conan, to Buzai Abbey; charter mentions his sister, Countess Bertha). Rosenzweig Cartulaire Général de Morbihan I (1895): 172 (charter dated 1130 which mentions Geoffrey the vicomte and Eudon his son), 179-180 (charter dated 1153 issued by Count Eudon ["Eudo comes"], given with the consent of his brothers, Josce the Vicomte and Alan Ceoche), 183-184 (charter of Eudon, Count of Brittany, dated 1164 which names his brother, Josce; his nephews, sons of his brother Josce; his uncle [patruus], Josce the vicomte; and his kinsman [cognato], Alan de Rohan; this charter is also witnessed by his brother, Étienne or Stephen). Bull. et Mémoires de la Société archéologique du Département d'Ille-et-Vilaine 27 (1898): 132-135. Delisle Recueil des Actes de Henri II, Roi d'Angleterre et Duc de Normandie (1909): 366 (biog. of Eudon, Count of Brittany). Brandenburg Die Nachkommen Karls des Großen (1935) XIII 48 (died 15 Nov. 1146), XIII/32-323. C.P. 10 (1945): 780 (chart), 788-791 (sub Richmond); 11 (1949): Appendix D, 105-121. Schwennicke Europäische Stammtafeln 2 (1984): 75. Winter Descs. of Charlemagne (800-1400) (1987): XIII.28, XIV.43-XIV.45. Everard Brittany & the Angevins: Province & Empire, 1158-1203 (2000). Burton Cartulary of Byland Abbey (Surtees Soc. 208) (2004).
      Child of Alan III of Brittany, by Bertha of Brittany:
      i. CONAN (IV), Duke of Brittany, Earl of Richmond [see next].
      Child of Eudon II of Porhoet, by Aliénor de Leon:
      i. EUDON FITZ COUNT, seigneur of Josselin, Mohon, la Chèze, la Nouée, Loudéac, Pleucadeuc, Villejagu, etc., son and heir, of age before 1195. He married MARGUERITE ___. They had three daughters, Mathilde, Elienor (wife of Alan V, Vicomte of Rohan and Pierre de Chemillé), and Jeanne (wife of Olivier de Montauban, seigneur of Montauban). He appears in charters dated variously pre-1195, 1201, 1221, 1225, and 1231. In 1231 he gave property with his body to Marmoutier Abbey for the remembrance of the anniversary of his death. EUDON FITZ COUNT died in 1231. His widow, Marguerite, was living in 1248. Morice Memoires pour Servir de Preuves à l'Hist. de Bretagne 1 (1742): 698, 793 (charter of Eudon Fitz Count dated 1201), 874 (charter of Eudon Fitz Count dated 1231), 890-891, 901-902, 907, 919-920, 933-935. Morice Histoire Ecclesiastique et Civil de Bretagne 1 (1750): xx-xxi (Porhoet ped.), 173. Rosenzweig Cartulaire général de Morbihan 1(1895): 206, 209-210, 215-216 (charters of Eudon Fitz Count rEudo filius Comitisl dated 1221,1225, and 1231), 223-225. Bull. et Mémoires de la Société archéologique du Département d'Ille-et-Vilaine 27 (1898): 132-135.
      Child of Eudes Fitz Count, by Marguerite ___:
      a. MATHILDE OF PORHOËT, married GEOFFREY DE FOUGÈRES, seigneur of Fougères in Brittany [see FOUGÈRES 6].
      ii. HENRI. He witnessed a charter with his brother, Eudes Fitz Count, sometime before 1195. Morice Memoires pour Servir de Preuves a l'Hist. de Bretagne 1 (1742): 698.”

      2. “Royal Ancestry: A Study in Colonial & Medieval Families,” Douglas Richardson (2013):
      “STEPHEN (or ÉTIENNE) OF BRITTANY, Count of Brittany, youngest son. He married HAWISE ___ . They had three sons, Geoffrey Boterel (II) [Count of Brittany], Alan (II) the Black [Count of Brittany, Earl of Richmond], and Henri [Count of Brittany and Tréguier], and four daughters, Maud, Agnorie, Olive, and Tiphaine (wife of Rabel de Tancarville, Chamberlain of Normandy). He succeeded his eldest brother, Geoffroi Boterel [I], or Geoffroi's son, Conan, in the Breton lands, and his brother Alain the Black in the honour of Richmond in England, thus uniting all the possessions of the family. In 1101 he served as surety for King Henry I for the observance of an affiance with Robert, Count of Flanders. The same year he witnessed charters of the king for Herbert, Bishop of Norwich, and St. Peter's, Bath. In 1107 he executed a charter at Lamballe for the Abbey of Sts. Sergius and Bacchus at Angers. In 1123 he granted a charter at Guincamp for the Abbey of St. Melaine at Rennes. He was a benefactor of the Abbey of St. Mary, York, and, in the period, 1125-35, he confirmed to that house gifts of churches. STEPHEN OF BRITTANY died 21 April, probably in 1135 or 1136, and was buried in the quire of St. Mary's, York.
      Le Baud Histoire de Bretagne (1638): 179 ("En l'an de nostre Seigneur 1137, selon lesdits Annaux, mourut Estienne Comte de Bretagne, & fut ensepulture en l'Eglise Cathedrale de S. Brieuc pres le Duc Eudon son pere."). Morice Histoire Ecclésiastique et Civil de Bretagne 1 (1750): xvii-xviii (Counts of Penthievre ped). Clay Early Yorkshire Charters 4 (1935): 4-14, 85. C.P. 10 (1945): 786-787 (sub Richmond). Schwennicke Europäische Stammtafeln 2 (1984): 75. Winter Descs. of Charlemagne (800-1400) (1987): XII.13, XIII.27-XIII.33. Everard Brittany & the Angevins: Province & Empire 1158-1203 (2004): 13, 31, 189. Karn English Episcopal Acta 31 (2005): 159-161.
      Children of Stephen (or Étienne) of Brittany, by Hawise ___:
      i. ALAN [II] the Black, Count of Brittany, Earl of Richmond, married BERTHA OF BRITTANY [see BRITTANY 4].
      II. MAUD OF BRITTANY, married WALTER DE GANT (or GAUNT), of Folkingham, Lincolnshire [see GANT 2].
      iii. AGNORIE OF BRITTANY [see next].
      iv. OLIVE OF BRITTANY, married (1st) HENRI DE FOUGERES, seigneur of Fougeres in Brittany [see FOUGERES 3], (2nd) WILLIAM DE SAINT JOHN, of Halnaker, Sussex [see FOUGERES 3].”