Paternal Family Tree: Obertenghi aka Welf
Maternal Family Tree: Dangereuse Ile Bouchard Viscountess Chatellerault 1079-1151
Otto Welf IV Holy Roman Emperor was appointed IV Holy Roman Emperor.
Otto Welf IV Holy Roman Emperor was appointed IV Duke Swabia.
In 1147 [his father] Henry "Lion" Welf XII Duke Saxony III Duke Bavaria [aged 18] and Clementia Zähringen Duchess Saxony Duchess Bavaria were married. They divorceddd in 1162. She the daughter of Conrad Zähringen 1st Duke Zähringen. He the son of [his grandfather] Henry "Proud" Welf X Duke Bavaria and [his grandmother] Gertrude Süpplingenburg Duchess Bavaria.
On 1st February 1168 [his father] Henry "Lion" Welf XII Duke Saxony III Duke Bavaria [aged 39] and [his mother] Matilda Plantagenet Duchess Saxony [aged 12] were married. She by marriage Duchess Bavaria, Duchess Saxony. The difference in their ages was 27 years. She the daughter of [his grandfather] King Henry "Curtmantle" II of England [aged 34] and [his grandmother] Eleanor of Aquitaine Queen Consort Franks and England [aged 46]. He the son of Henry "Proud" Welf X Duke Bavaria and Gertrude Süpplingenburg Duchess Bavaria. They were half third cousin twice removed.
Around 1175 Otto Welf IV Holy Roman Emperor was born to Henry "Lion" Welf XII Duke Saxony III Duke Bavaria [aged 46] and Matilda Plantagenet Duchess Saxony [aged 18]. He a grandson of King Henry "Curtmantle" II of England.
In 1189 [his brother-in-law] Geoffrey Chateaudun III Count Perche and [his sister] Matilda Welf Countess Perche [aged 17] were married at Rouen, France [Map]. She by marriage Countess Perche. She the daughter of [his father] Henry "Lion" Welf XII Duke Saxony III Duke Bavaria [aged 60] and [his mother] Matilda Plantagenet Duchess Saxony [aged 32]. He the son of Routrou Chateaudun IV Count Perche [aged 54] and Matilda Blois Countess Perche. They were third cousin once removed. He a great x 2 grandson of King William "Conqueror" I of England. She a granddaughter of King Henry "Curtmantle" II of England.
On 28th June 1189 [his mother] Matilda Plantagenet Duchess Saxony [aged 33] died. She was buried at Brunswick Cathedral [Map].
On 6th August 1195 [his father] Henry "Lion" Welf XII Duke Saxony III Duke Bavaria [aged 66] died at Ravensburg. Otto Wittelsbach I Duke Bavaria succeeded I Duke Bavaria.
In 1204 [his sister] Matilda Welf Countess Perche [aged 32] died.
This is a translation of the 'Memoires of Jacques du Clercq', published in 1823 in two volumes, edited by Frederic, Baron de Reissenberg. In his introduction Reissenberg writes: 'Jacques du Clercq tells us that he was born in 1424, and that he was a licentiate in law and a counsellor to Philip the Good, Duke of Burgundy, in the castellany of Douai, Lille, and Orchies. It appears that he established his residence at Arras. In 1446, he married the daughter of Baldwin de la Lacherie, a gentleman who lived in Lille. We read in the fifth book of his Memoirs that his father, also named Jacques du Clercq, had married a lady of the Le Camelin family, from Compiègne. His ancestors, always attached to the counts of Flanders, had constantly served them, whether in their councils or in their armies.' The Memoires cover a period of nineteen years beginning in in 1448, ending in in 1467. It appears that the author had intended to extend the Memoirs beyond that date; no doubt illness or death prevented him from carrying out this plan. As Reissenberg writes the 'merit of this work lies in the simplicity of its narrative, in its tone of good faith, and in a certain air of frankness which naturally wins the reader’s confidence.' Du Clercq ranges from events of national and international importance, including events of the Wars of the Roses in England, to simple, everyday local events such as marriages, robberies, murders, trials and deaths, including that of his own father in Book 5; one of his last entries.
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In 1204 [his brother-in-law] Enguerrand Coucy III Lord Coucy [aged 22] and [his sister] Matilda Welf Countess Perche [aged 32] were married. She by marriage Lord Coucy. She the daughter of [his father] Henry "Lion" Welf XII Duke Saxony III Duke Bavaria and [his mother] Matilda Plantagenet Duchess Saxony. They were half fifth cousins. She a granddaughter of King Henry "Curtmantle" II of England.
In 1218 Otto Welf IV Holy Roman Emperor [aged 43] died.
Kings Wessex: Great x 5 Grand Son of King Edmund "Ironside" I of England
Kings England: Grand Son of King Henry "Curtmantle" II of England
Kings Scotland: Great x 3 Grand Son of King Malcolm III of Scotland
Kings France: Great x 6 Grand Son of Hugh I King of the Franks
Kings Duke Aquitaine: Great x 9 Grand Son of Ranulf I Duke Aquitaine
Great x 4 Grandfather: Albert Azzo I Margrave of Milan
Great x 3 Grandfather: Albert Azzo II Margrave of Milan
Great x 2 Grandfather: Welf I Duke Bavaria
Great x 3 Grandmother: Kunigunde
Great x 1 Grandfather: Henry "Black" Welf IX Duke Bavaria 5 x Great Grandson of King Alfred "The Great" of Wessex
Great x 4 Grandfather: Arnulf II Count Flanders 2 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandfather: Baldwin "Bearded" IV Count Flanders 3 x Great Grandson of King Alfred "The Great" of Wessex
Great x 4 Grandmother: Rozala of Italy 
5 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandmother: Judith Flanders Duchess Bavaria 4 x Great Granddaughter of King Alfred "The Great" of Wessex
Great x 4 Grandfather: Richard "Good" Normandy II Duke Normandy 
Great x 3 Grandmother: Matilda Normandy Countess Flanders 8 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Judith Penthièvre Duchess Normandy 7 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Grandfather: Henry "Proud" Welf X Duke Bavaria 6 x Great Grandson of King Alfred "The Great" of Wessex
Great x 4 Grandfather: Bernard II Duke of Saxony
Great x 3 Grandfather: Ordulf Duke of Saxony
Great x 2 Grandfather: Magnus Billung Duke Saxony
Great x 4 Grandfather: King Olaf "Stout" II of Norway
Great x 3 Grandmother: Wulfhild of Norway
Great x 1 Grandmother: Wulfhilde of Saxony Duchess Bavaria
father: Henry "Lion" Welf XII Duke Saxony III Duke Bavaria 7 x Great Grandson of King Alfred "The Great" of Wessex
Grandmother: Gertrude Süpplingenburg Duchess Bavaria
Otto Welf IV Holy Roman Emperor Grandson of King Henry "Curtmantle" II of England
Great x 4 Grandfather: Geoffrey "Ferréol" Anjou 2nd Count Gâtinais 
Great x 3 Grandfather: Fulk "Réchin" Anjou 4th Count Anjou 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Ermengarde Blanche Ingelger Duchess Burgundy 7 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandfather: Fulk "Young" King Jerusalem 9 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Simon Montfort
Great x 3 Grandmother: Bertrade Montfort Queen Consort France
Great x 4 Grandmother: Agnès of Normandy
Great x 1 Grandfather: Geoffrey Plantagenet Duke Normandy 9 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Jean de la Flèche de Baugency
Great x 3 Grandfather: Elias I Count Maine 7 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandmother: Paula Maine 6 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandmother: Ermengarde of Maine Countess of Anjou 8 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 4 Grandfather: Gervais II Lord Chateau Du Loir
Great x 3 Grandmother: Matilda Chateau Du Loir Countess Maine
Grandfather: King Henry "Curtmantle" II of England Grandson of King Henry I "Beauclerc" England
Great x 4 Grandfather: Robert "Magnificent" Normandy I Duke Normandy 8 x Great Grandson of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 3 Grandfather: King William "Conqueror" I of England -2 x Great Grandson of King William "Conqueror" I of England
Great x 4 Grandmother: Herleva of Falaise
Great x 2 Grandfather: King Henry I "Beauclerc" England son of King William "Conqueror" I of England
Great x 4 Grandfather: Baldwin "The Good" V Count Flanders 4 x Great Grandson of King Alfred "The Great" of Wessex
Great x 3 Grandmother: Matilda Flanders Queen Consort England Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Adela Capet Duchess Normandy 
Granddaughter of Hugh I King of the Franks
Great x 1 Grandmother: Empress Matilda daughter of King Henry I "Beauclerc" England
Great x 4 Grandfather: King Duncan I of Scotland 
-2 x Great Grandson of King Duncan I of Scotland
Great x 3 Grandfather: King Malcolm III of Scotland son of King Duncan I of Scotland
Great x 4 Grandmother: Bethóc Unknown Queen Consort Scotland
Great x 2 Grandmother: Edith aka Matilda Dunkeld Queen Consort England daughter of King Malcolm III of Scotland
Great x 4 Grandfather: Edward "The Exile" Wessex son of King Edmund "Ironside" I of England
Great x 3 Grandmother: Margaret Wessex Queen Consort Scotland Granddaughter of King Edmund "Ironside" I of England
Great x 4 Grandmother: Agatha
mother: Matilda Plantagenet Duchess Saxony daughter of King Henry "Curtmantle" II of England
Great x 4 Grandfather: William "Great" V Duke Aquitaine 3 x Great Grandson of Ranulf I Duke Aquitaine
Great x 3 Grandfather: Guy William Poitiers VIII Duke Aquitaine 4 x Great Grandson of Ranulf I Duke Aquitaine
Great x 4 Grandmother: Agnes Ivrea Duchess Aquitaine 7 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 2 Grandfather: William "Troubadour" Poitiers IX Duke Aquitaine 2 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Robert I Duke Burgundy Grandson of Hugh I King of the Franks
Great x 3 Grandmother: Hildegarde Burgundy Duchess Aquitaine Great Granddaughter of Hugh I King of the Franks
Great x 4 Grandmother: Ermengarde Blanche Ingelger Duchess Burgundy 7 x Great Granddaughter of Charles "Charlemagne aka Great" King of the Franks King Lombardy Holy Roman Emperor
Great x 1 Grandfather: William "Saint" Poitiers X Duke Aquitaine 3 x Great Grandson of Hugh I King of the Franks
Great x 4 Grandfather: Pons Rouerge Margrave Provence
Great x 3 Grandfather: William Rouerge Duke Narbonne
Great x 4 Grandmother: Almodis La Marche Margrave Provence
Great x 2 Grandmother: Philippa Rouerge Duchess Aquitaine
Great x 4 Grandfather: Robert Mortain Count Mortain 1st Earl Cornwall
Great x 3 Grandmother: Emma Mortain Duchess Narbonne
Great x 4 Grandmother: Matilda or Maud Montgomery
Grandmother: Eleanor of Aquitaine Queen Consort Franks and England 4 x Great Granddaughter of Hugh I King of the Franks
Great x 2 Grandfather: Aimery Chatellerault Viscount Châtellerault
Great x 1 Grandmother: Aenor Chatellerault Duchess Aquitaine
Great x 3 Grandfather: Bartholomew Île Bouchard
Great x 2 Grandmother: Dangereuse Ile Bouchard Viscountess Chatellerault