Robert Mortain Count Mortain 1st Earl Cornwall 1031-1090

Around 1031 Robert Mortain Count Mortain 1st Earl Cornwall was born to Herluin de Conteville [aged 30] and Herleva of Falaise.

On 2nd July 1035 Robert "Magnificent" I Duke Normandy [aged 35] died at Nicaea. His son [his illegitimate half-brother] William [aged 7] succeeded II Duke Normandy.

In 1047 [his illegitimate half-brother] King William "Conqueror" I of England [aged 19], supported by Henry I King of the Franks [aged 38], defeated a rebel army led by William's cousin Guy Ivrea [aged 22] who opposed William's succession as Duke of Normandy at the Battle of Val-ès-Dunes in Caen, Calvados, Basse Normandie.

Hamon Dentatus was killed.

Around 1049 Robert Mortain Count Mortain 1st Earl Cornwall [aged 18] was appointed Count Mortain Mortagne.

Before 1051 [his illegitimate half-brother] King William "Conqueror" I of England [aged 22] and [his sister-in-law] Matilda Flanders Queen Consort England [aged 19] were married. She the daughter of Baldwin "The Good" V Count Flanders [aged 38] and Adela Capet Duchess Normandy [aged 41]. He the illegitmate son of Robert "Magnificent" I Duke Normandy and [his mother] Herleva of Falaise. They were third cousin once removed.

Before 1066 Robert Mortain Count Mortain 1st Earl Cornwall [aged 34] and Matilda or Maud Montgomery were married. She the daughter of Roger "The Great" Montgomery 1st Earl of Shrewsbury and Mabel de Bellême [aged 30].

In 1066 [his father] Herluin de Conteville [aged 65] died.

On 14th October 1066 the Norman army led by [his illegitimate half-brother] King William "Conqueror" I of England [aged 38] defeated the English army of King Harold II of England [aged 44] at the 14th October 1066 Battle of Hastings fought at Senlac Hill Hastings. Aimery Thouars [aged 42], Ralph de Gael 2nd Earl East Anglia [aged 24], Eustace II Count Boulogne [aged 51], William Fitzosbern 1st Earl Hereford [aged 46], Geoffrey Chateaudun II Count Mortain III Count Perche, William Warenne 1st Earl of Surrey, Raoul Tosny, Robert Beaumont 1st Earl of Leicester Count Meulan [aged 26], Hugh Grandesmil [aged 34], [his father-in-law] Roger "The Great" Montgomery 1st Earl of Shrewsbury (possibly), Robert Mortain Count Mortain 1st Earl Cornwall [aged 35] and Bishop Odo of Bayeux fought for William.

King Harold II of England was killed. Earl Wessex, Earl Hereford extinct.

Leofwine Godwinson 2nd Earl Kent [aged 31] was killed. Earl Kent extinct.

His brothers Gyrth Godwinson Earl East Anglia [aged 34] and Engenulphe Aigle [aged 56] were killed.

On 25th December 1066 [his illegitimate half-brother] King William "Conqueror" I of England [aged 38] was crowned I King of England at Westminster Abbey [Map] by Archbishop Ealdred.

On 28th January 1069 Robert de Comines Earl Northumbria was burned to death in Durham, County Durham [Map] when a rebel army set fire to the house in which he was staying. All his men were killed. In retaliation [his illegitimate half-brother] King William "Conqueror" I of England [aged 41] commenced the Harrying of the North.

Around 1070 Launceston Castle [Map] was commissioned by Robert Mortain Count Mortain 1st Earl Cornwall [aged 39].

In 1072 Robert Mortain Count Mortain 1st Earl Cornwall [aged 41] was created 1st Earl Cornwall.

Before 1084 [his son] William Mortain Count Mortain 2nd Earl Cornwall was born to Robert Mortain Count Mortain 1st Earl Cornwall [aged 52] and [his wife] Matilda or Maud Montgomery.

Around 1085 [his wife] Matilda or Maud Montgomery died.

On 9th September 1087 [his illegitimate half-brother] King William "Conqueror" I of England [aged 59] died at the Priory of St Gervaise, Rouen [Map]. He was buried at the Abbaye aux Hommes, Caen [Map], at a ceremony presided over by Gilbert Arques Bishop Evreux. [his illegitimate nephew] King Henry I "Beauclerc" England [aged 19] attended. His son William [aged 31] succeeded II King of England. His son Robert [aged 36] succeeded III Duke Normandy.

In 1090 Robert Mortain Count Mortain 1st Earl Cornwall [aged 59] died. His son William [aged 6] succeeded Count Mortain Mortagne, 2nd Earl Cornwall.

Around 1100 Restormel Castle, Cornwall [Map] was constructed as a Norman Motte and Bailey Castle on behalf of Robert Mortain Count Mortain 1st Earl Cornwall to protect a crossing point of the River Fowey.

Adam Murimuth's Continuation and Robert of Avesbury’s 'The Wonderful Deeds of King Edward III'

This volume brings together two of the most important contemporary chronicles for the reign of Edward III and the opening phases of the Hundred Years’ War. Written in Latin by English clerical observers, these texts provide a vivid and authoritative window into the political, diplomatic, and military history of fourteenth-century England and its continental ambitions. Adam Murimuth Continuatio's Chronicarum continues an earlier chronicle into the mid-fourteenth century, offering concise but valuable notices on royal policy, foreign relations, and ecclesiastical affairs. Its annalistic structure makes it especially useful for establishing chronology and tracing the development of events year by year. Complementing it, Robert of Avesbury’s De gestis mirabilibus regis Edwardi tertii is a rich documentary chronicle preserving letters, treaties, and official records alongside narrative passages. It is an indispensable source for understanding Edward III’s claim to the French crown, the conduct of war, and the mechanisms of medieval diplomacy. Together, these works offer scholars, students, and enthusiasts a reliable and unembellished account of a transformative period in English and European history. Essential for anyone interested in medieval chronicles, the Hundred Years’ War, or the reign of Edward III.

Available at Amazon in eBook and Paperback format.

[his father] Herluin de Conteville and [his mother] Herleva of Falaise were married.

[his father] Herluin de Conteville and Fredesendis were married.

[his daughter] Emma Mortain Duchess Narbonne was born to Robert Mortain Count Mortain 1st Earl Cornwall and Matilda or Maud Montgomery. She married William Rouerge Duke Narbonne, son of Pons Rouerge Margrave Provence and Almodis La Marche Margrave Provence, and had issue.

[his daughter] Denise Mortain was born to Robert Mortain Count Mortain 1st Earl Cornwall and Matilda or Maud Montgomery.

[his daughter] Agnes Mortain was born to Robert Mortain Count Mortain 1st Earl Cornwall and Matilda or Maud Montgomery.

Royal Descendants of Robert Mortain Count Mortain 1st Earl Cornwall 1031-1090
Number after indicates the number of unique routes of descent. Descendants of Kings and Queens not included.

Agnes Poitiers Queen Consort Aragon [1]

Eleanor of Aquitaine Queen Consort Franks and England [1]

Ancestors of Robert Mortain Count Mortain 1st Earl Cornwall 1031-1090

father: Herluin de Conteville

Robert Mortain Count Mortain 1st Earl Cornwall

Grandfather: Father of Beatrix and Herleva

mother: Herleva of Falaise