Paternal Family Tree: William Cavendish 7th Duke Devonshire
On 18th July 1807 [his father] William Cavendish [aged 24] and [his mother] Louisa O'Callaghan were married. He the son of [his grandfather] George Augustus Henry Cavendish 1st Earl Burlington [aged 53] and [his grandmother] Elizabeth Compton Countess Burlington [aged 47].
On 27th April 1808 William Cavendish 7th Duke Devonshire was born to William Cavendish [aged 25] and Louisa O'Callaghan.
On 15th January 1812 [his father] William Cavendish [aged 29] died.
Around 1828. George Hayter [aged 35]. Portrait of William Cavendish 7th Duke Devonshire [aged 19].
In 1829 William Cavendish 7th Duke Devonshire [aged 20] and Blanche Georgiana Howard [aged 16] were married. She the daughter of George Howard 6th Earl Carlisle [aged 55] and Georgiana Cavendish Countess Carlisle [aged 45]. They were second cousins.
On 8th October 1831 [his son] William Cavendish was born to William Cavendish 7th Duke Devonshire [aged 23] and [his wife] Blanche Georgiana Howard [aged 19]. Coefficient of inbreeding 1.65%. He died aged two in 1834.
On 19th July 1833 George Granville Leveson-Gower 1st Duke Sutherland [aged 75] died. His succeeded son George [aged 46] succeeded 2nd Duke Sutherland, 3rd Marquess Stafford, 20th Earl Sutherland, 4th Earl Gower, 5th Baron Gower, 9th Baronet Gower of Stittenham in Yorkshire. [his sister-in-law] Harriet Elizabeth Georgiana Howard Duchess Sutherland [aged 27] by marriage Duchess Sutherland.
On 23rd July 1833 [his son] Spencer Cavendish 8th Duke Devonshire was born to William Cavendish 7th Duke Devonshire [aged 25] and [his wife] Blanche Georgiana Howard [aged 21]. Coefficient of inbreeding 1.65%. He married 16th August 1892 Louisa Vonalten Duchess Devonshire and Manchester.
On 4th May 1834 [his grandfather] George Augustus Henry Cavendish 1st Earl Burlington [aged 80] died. His succeeded grandson William [aged 26] succeeded 2nd Earl Burlington.
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.
After 4th May 1834 George Henry Cavendish [aged 23] was elected MP North Derbyshire succeededing his older brother William [aged 26] when William succeeded his grandfather George Augustus Henry Cavendish 1st Earl Burlington [deceased] as Earl Burlington. He held the seat until his death in 1880.
On 15th May 1834 [his son] William Cavendish [aged 2] died.
On 16th March 1835 [his daughter] Louisa Caroline Cavendish was born to William Cavendish 7th Duke Devonshire [aged 26] and [his wife] Blanche Georgiana Howard [aged 23]. Coefficient of inbreeding 1.65%. She married 26th September 1865 her second cousin once removed Francis Leveson-Gower aka Egerton, son of Francis Leveson Gower aka Egerton 1st Earl Ellesmere and Harriet Greville Countess Ellesmere, and had issue.
On 30th November 1836 [his son] Frederick Charles Cavendish was born to William Cavendish 7th Duke Devonshire [aged 28] and [his wife] Blanche Georgiana Howard [aged 24] at Compton Place Eastbourne. Coefficient of inbreeding 1.65%. He married 7th June 1864 his third cousin Lucy Caroline Lyttelton, daughter of George William Lyttelton 4th Baron Lyttelton and Mary Glynne Lady Lyttelton.
On 28th January 1838 [his son] Edward Cavendish was born to William Cavendish 7th Duke Devonshire [aged 29] and [his wife] Blanche Georgiana Howard [aged 26] at Marylebone. Coefficient of inbreeding 1.65%. He married 3rd August 1865 his first cousin Emma Elizabeth Lascelles, daughter of William Lascelles and Caroline Georgiana Howard, and had issue.
On 27th April 1840 [his wife] Blanche Georgiana Howard [aged 28] died.
In 1858 Queen Victoria of the United Kingdom [aged 38] appointed five Knights of the Garter:
720th Frederick III King Prussia [aged 26].
721st Arthur Wellesley 2nd Duke Wellington [aged 50].
722nd William Cavendish 7th Duke Devonshire [aged 49].
723rd King Pedro V of Portugal [aged 20].
724th The Prince of Wales [aged 16].
On 18th January 1858 William Cavendish 6th Duke Devonshire [aged 67] died at Hardwick Hall, Derbyshire [Map]. He was buried in the Cavendish Plot, St Peter's Church, Edensor [Map]. His succeeded first cousin once removed William [aged 49] succeeded 7th Duke Devonshire, 10th Earl Devonshire, 10th Baron Cavendish Hardwick. Baron Clifford abeyant.
On 7th June 1864 Frederick Charles Cavendish [aged 27] and Lucy Caroline Lyttelton [aged 22] were married. No issue. He the son of William Cavendish 7th Duke Devonshire [aged 56] and Blanche Georgiana Howard. They were third cousins.
On 3rd August 1865 Edward Cavendish [aged 27] and Emma Elizabeth Lascelles were married. He the son of William Cavendish 7th Duke Devonshire [aged 57] and Blanche Georgiana Howard. They were first cousins.
On 26th September 1865 [his son-in-law] Francis Leveson-Gower aka Egerton [aged 41] and Louisa Caroline Cavendish [aged 30] were married. She the daughter of William Cavendish 7th Duke Devonshire [aged 57] and Blanche Georgiana Howard. He the son of Francis Leveson Gower aka Egerton 1st Earl Ellesmere and Harriet Greville Countess Ellesmere [aged 62]. They were second cousin once removed.
On 6th May 1882 [his son] Frederick Charles Cavendish [aged 45] was assassinated at Phoenix Park, Dublin during the Phoenix Park Killings. He was buried in the Cavendish Plot, St Peter's Church, Edensor [Map].
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.
On 18th May 1891 [his son] Edward Cavendish [aged 53] died. Monument to Edward Cavendish in Cartmel Priory, Lancashire [Map].
Edward Cavendish: On 28th January 1838 he was born to William Cavendish 7th Duke Devonshire and Blanche Georgiana Howard at Marylebone. Coefficient of inbreeding 1.65%. On 3rd August 1865 Edward Cavendish and Emma Elizabeth Lascelles were married. He the son of William Cavendish 7th Duke Devonshire and Blanche Georgiana Howard. They were first cousins.
On 21st December 1891 William Cavendish 7th Duke Devonshire [aged 83] died. He was buried at the Cavendish Plot, St Peter's Church, Edensor [Map]. His succeeded son Spencer [aged 58] succeeded 8th Duke Devonshire, 11th Earl Devonshire, 3rd Earl Burlington, 11th Baron Cavendish Hardwick.
Kings Wessex: Great x 24 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 20 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 25 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 21 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 24 Grand Son of King Harold II of England
Kings England: Great x 10 Grand Son of King Henry VII of England and Ireland
Kings Scotland: Great x 15 Grand Son of King Robert III of Scotland
Kings France: Great x 13 Grand Son of Charles "Beloved Mad" VI King France
Kings Duke Aquitaine: Great x 28 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 20 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: William Cavendish 1st Duke Devonshire 
9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: William Cavendish 2nd Duke Devonshire 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Butler Duchess Devonshire 
10 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: William Cavendish 3rd Duke Devonshire 10 x Great Grand Son of King Henry IV of England
Great x 4 Grandfather: William Russell 
9 x Great Grand Son of King Robert III of Scotland
Great x 3 Grandmother: Rachel Russell Duchess Devonshire 9 x Great Grand Daughter of King Henry IV of England
Great x 4 Grandmother: Rachel Wriothesley 
8 x Great Grand Daughter of King Henry IV of England
Great x 1 Grandfather: William Cavendish 4th Duke Devonshire 11 x Great Grand Son of King Henry IV of England
Great x 4 Grandfather: Charles Hoskins
Great x 3 Grandfather: John Hoskins of Oxted
Great x 2 Grandmother: Catherine Hoskins Duchess Devonshire
Great x 4 Grandfather: William Hale
Great x 3 Grandmother: Catherine Hale
GrandFather: George Augustus Henry Cavendish 1st Earl Burlington 8 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Charles Boyle 3rd Baron Clifford 
9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Charles Boyle 2nd Earl Burlington 5 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Jane Seymour 
4 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 2 Grandfather: Richard Boyle 3rd Earl Burlington 6 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Henry Noel 
22 x Great Grand Son of Hugh I King of the Franks
Great x 3 Grandmother: Juliana Noel Countess Burlington 23 x Great Grand Daughter of Hugh I King of the Franks
Great x 1 Grandmother: Charlotte Elizabeth Boyle Marchioness Hartington 7 x Great Grand Daughter of King Henry VII of England and Ireland
Great x 4 Grandfather: George Savile 1st Marquess Halifax 
9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: William Savile 2nd Marquess Halifax 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Dorothy Spencer Lady Savile 
9 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Dorothy Savile Countess Burlington 11 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Daniel Finch 2nd Earl Nottingham 7th Earl Winchilsea 
10 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Finch Duchess Roxburghe 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Essex Rich Countess Nottingham 
9 x Great Grand Daughter of King Edward III of England
Father: William Cavendish 9 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: James Compton 3rd Earl of Northampton 
8 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Compton 4th Earl of Northampton 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Noel Countess Northampton 22 x Great Grand Daughter of Hugh I King of the Franks
Great x 2 Grandfather: Charles Compton 10 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Stephen Fox 
Great x 3 Grandmother: Jane Fox Countess Northampton
Great x 4 Grandmother: Elizabeth Whittle
Great x 1 Grandfather: Charles Compton 7th Earl of Northampton 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Kingsmill Lucy 2nd Baronet 
Great x 3 Grandfather: Berkeley Lucy 3rd Baronet 9 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Theophila Berkeley 
8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandmother: Mary Lucy 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Charles Cotton
Great x 3 Grandmother: Catherine Cotton 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Isabella Hutchinson 8 x Great Grand Daughter of King Edward III of England
GrandMother: Elizabeth Compton Countess Burlington 12 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Charles Somerset Marquess Worcester 
10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Henry Somerset 2nd Duke Beaufort 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Rebecca Child Marchioness Worcester
Great x 2 Grandfather: Charles Noel Somerset 4th Duke Beaufort 11 x Great Grand Son of King Henry IV of England
Great x 4 Grandfather: Wriothesley Baptist Noel 2nd Earl Gainsborough 9 x Great Grand Son of King Henry IV of England
Great x 3 Grandmother: Rachel Noel Duchess Beaufort 10 x Great Grand Daughter of King Henry IV of England
Great x 4 Grandmother: Catherine Greville Duchess Buckingham and Normandby 
10 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Anne Somerset Countess Northampton 12 x Great Grand Daughter of King Henry IV of England
Great x 4 Grandfather: Richard Berkeley 11 x Great Grand Son of King Edward I of England
Great x 3 Grandfather: John Symes Berkeley 12 x Great Grand Son of King Edward I of England
Great x 2 Grandmother: Elizabeth Berkeley Duchess Beaufort 13 x Great Grand Daughter of King Edward I of England
Great x 3 Grandmother: Elizabeth Norborne
William Cavendish 7th Duke Devonshire 10 x Great Grand Son of King Henry VII of England and Ireland
Mother: Louisa O'Callaghan