On 12 Jul 1843 [his father] John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 (age 21) and [his mother] Frances Anne Emily Vane Duchess Marlborough (age 21) were married. She the daughter of Charles William Vane 3rd Marquess Londonderry (age 65) and Frances Vane Tempest Marchioness Londonderry 1800-1865 (age 43). He the son of George Spencer-Churchill 6th Duke Marlborough (age 49) and Jane Stewart Duchess Marlborough 1798-1844 (age 45).
On 13 May 1844 George Charles Spencer-Churchill 8th Duke Marlborough was born to John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 (age 21) and Frances Anne Emily Vane Duchess Marlborough (age 22).
On 01 Jul 1857 [his grandfather] George Spencer-Churchill 6th Duke Marlborough (age 63) died. His son [his father] John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 (age 35) succeeded 7th Duke Marlborough, 7th Marquess of Blandford, 7th Earl of Marlborough, 7th Baron Churchill of Sandridge in Hertfordshire, 9th Earl of Sunderland, 11th Baron Spencer Wormleighton. [his mother] Frances Anne Emily Vane Duchess Marlborough (age 35) by marriage Duchess Marlborough.
In 1869 George Charles Spencer-Churchill 8th Duke Marlborough (age 24) and Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 22) were married. She the daughter of James Hamilton 1st Duke Abercorn 1811-1885 (age 57) and Louisa Jane Russell Duchess Abercorn 1812-1905 (age 56). He the son of John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 (age 46) and Frances Anne Emily Vane Duchess Marlborough (age 46). They were third cousin once removed. She a great x 4 granddaughter of King Charles II of England Scotland and Ireland. 
On 15 Sep 1870 [his daughter] Frances Louisa Spencer-Churchill Lady Gresley was born to George Charles Spencer-Churchill 8th Duke Marlborough (age 26) and [his wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 23).
On 13 Nov 1871 [his son] Charles Richard John Spencer-Churchill 9th Duke Marlborough was born to George Charles Spencer-Churchill 8th Duke Marlborough (age 27) and [his wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 24) at Simla.
On 09 Jul 1873 [his daughter] Lillian Maud Spencer-Churchill was born to George Charles Spencer-Churchill 8th Duke Marlborough (age 29) and [his wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 26).
On 01 Sep 1875 [his daughter] Norah Beatrice Henriette Spencer-Churchill was born to George Charles Spencer-Churchill 8th Duke Marlborough (age 31) and [his wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 28).
On 20 Jul 1878 [his brother-in-law] Claud Hamilton (age 35) and Caroline Chandos-Pole (age 21) were married. He the son of James Hamilton 1st Duke Abercorn 1811-1885 (age 67) and Louisa Jane Russell Duchess Abercorn 1812-1905 (age 66). He a great x 4 grandson of King Charles II of England Scotland and Ireland. She a great x 5 granddaughter of King Charles II of England Scotland and Ireland.
On 04 Nov 1881 [his illegitimate son] Guy Bertrand Spencer was born illegitimately to George Charles Spencer-Churchill 8th Duke Marlborough (age 37) and (age 37).
On 05 Jul 1883 [his father] John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 (age 61) died. His son George Charles Spencer-Churchill 8th Duke Marlborough (age 39) succeeded 8th Duke Marlborough, 8th Marquess of Blandford, 8th Earl of Marlborough, 8th Baron Churchill of Sandridge in Hertfordshire, 10th Earl of Sunderland, 12th Baron Spencer Wormleighton. [his wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 36) by marriage Duchess Marlborough.
On 09 Nov 1892 George Charles Spencer-Churchill 8th Duke Marlborough (age 48) died. His son [his son] Charles Richard John Spencer-Churchill 9th Duke Marlborough (age 20) succeeded 9th Duke Marlborough, 9th Marquess of Blandford, 9th Earl of Marlborough, 9th Baron Churchill of Sandridge in Hertfordshire, 11th Earl of Sunderland, 13th Baron Spencer Wormleighton.
In 1932 [his former wife] Albertha Frances Anne Hamilton Duchess Marlborough 1847-1932 (age 85) died.
Paternal Family Tree: Spencer
Maternal Family Tree: Frances Vane Tempest Marchioness Londonderry 1800-1865
Kings Wessex: Great x 25 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 22 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 28 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 23 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 15 Grand Son of King Edward III of England
Kings Scotland: Great x 18 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 21 Grand Son of Louis VII King Franks
Kings France: Great x 17 Grand Son of Philip "The Fair" IV King France
Great x 4 Grandfather: Charles Spencer 3rd Earl of Sunderland 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Charles Spencer 3rd Duke Marlborough 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Anne Churchill Countess Sunderland 1683-1716
15 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: George Spencer 4th Duke Marlborough 12 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Trevor 2nd Baron Trevor Bromham
Great x 3 Grandmother: Elizabeth Trevor Duchess Marlborough 1713-1761
Great x 1 Grandfather: George Spencer-Churchill 5th Duke Marlborough 1766-1840 12 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Wriothesley Russell 2nd Duke Bedford 1680-1711 9 x Great Grand Son of Henry IV King England
Great x 3 Grandfather: John Russell 4th Duke Bedford 10 x Great Grand Son of Henry IV King England
Great x 2 Grandmother: Caroline Russell Duchess Marlborough 1743-1811 11 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: John Leveson-Gower 1st Earl Gower 10 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Gertrude Leveson-Gower Duchess Bedford -1794 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Evelyn Pierrepont Baroness Gower
9 x Great Grand Daughter of King Edward III of England
GrandFather: George Spencer-Churchill 6th Duke Marlborough 13 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: James Stewart 5th Earl Galloway 1670-1746 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Alexander Stewart 6th Earl Galloway 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Catherine Montgomerie Countess Galloway 11 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: John Stewart 7th Earl Galloway 1736-1806 12 x Great Grand Son of King Edward III of England
Great x 1 Grandmother: Susan Stewart Duchess Marlborough 1767-1841 13 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Robert Dashwood
Great x 3 Grandfather: James Dashwood 2nd Baronet
Great x 4 Grandmother: Dorothy Reade
Great x 2 Grandmother: Anne Dashwood Countess Galloway 1743-1830
Great x 4 Grandfather: Edward Spencer
Great x 3 Grandmother: Elizabeth Spencer Lady Dashwood
Father: John Winston Spencer-Churchill 7th Duke Marlborough 1822-1883 14 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: James Stewart 5th Earl Galloway 1670-1746 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Alexander Stewart 6th Earl Galloway 11 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Catherine Montgomerie Countess Galloway 11 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: John Stewart 7th Earl Galloway 1736-1806 12 x Great Grand Son of King Edward III of England
Great x 1 Grandfather: George Stewart 8th Earl Galloway 1768-1834 13 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Robert Dashwood
Great x 3 Grandfather: James Dashwood 2nd Baronet
Great x 4 Grandmother: Dorothy Reade
Great x 2 Grandmother: Anne Dashwood Countess Galloway 1743-1830
Great x 4 Grandfather: Edward Spencer
Great x 3 Grandmother: Elizabeth Spencer Lady Dashwood
GrandMother: Jane Stewart Duchess Marlborough 1798-1844 14 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Edward Bayly 1st Baronet
Great x 3 Grandfather: Nicholas Bayly 2nd Baronet Bayly of Plas Newydd in Anglesey
Great x 2 Grandfather: Henry Bayly-Paget 1st Earl Uxbridge 12 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Paget
10 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Caroline Paget Lady Plas Newydd Anglesey 11 x Great Grand Daughter of King Edward III of England
Great x 1 Grandmother: Jane Paget Countess Galloway 1774-1842 13 x Great Grand Daughter of King Edward III of England
George Charles Spencer-Churchill 8th Duke Marlborough 1844-1892 15 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: William Stewart of Ballylawn in County Donegal
Great x 2 Grandfather: Alexander Stewart
Great x 1 Grandfather: Robert Stewart 1st Marquess Londonderry
Great x 3 Grandfather: John Cowan
Great x 2 Grandmother: Mary Cowan
GrandFather: Charles William Vane 3rd Marquess Londonderry
Great x 3 Grandfather: John Pratt
Great x 2 Grandfather: Charles Pratt 1st Earl Camden
Great x 1 Grandmother: Frances Pratt Marchioness Londonderry 1751-1833
Great x 4 Grandfather: Jeffrey Jeffreys
Great x 3 Grandfather: Nicholas Jeffreys of The Priory Breconshire
Great x 2 Grandmother: Elizabeth Jeffreys Countess Camden 1725-1779
Mother: Frances Anne Emily Vane Duchess Marlborough 15 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Lionel Vane 10 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Vane of Long Newton 11 x Great Grand Son of King Edward III of England
Great x 2 Grandfather: Henry Vane 1st Baronet 12 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Ann Machon
Great x 1 Grandfather: Henry Vane-Tempest 2nd Baronet 13 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: John Tempest Old Durham
Great x 3 Grandfather: John Tempest of Sherburne Durham
Great x 2 Grandmother: Frances Tempest
GrandMother: Frances Vane Tempest Marchioness Londonderry 1800-1865 14 x Great Grand Daughter of King Edward III of England
