On 27 May 1849 [his grandfather] William Beauclerk 9th Duke St Albans (age 48) died. His son [his father] William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 (age 9) succeeded 10th Duke St Albans, 10th Earl Burford, 10th Baron Heddington.
On 20 Jun 1867 [his father] William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 (age 27) and [his mother] Sybil Mary Grey Duchess St Albans 1848-1871 (age 18) were married. She by marriage Duchess St Albans. He the son of William Beauclerk 9th Duke St Albans and (age 49). They were fourth cousins. He a great x 4 grandson of King Charles II of England Scotland and Ireland.
On 26 Mar 1870 Charles De Vere Beauclerk 11th Duke St Albans was born to William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 (age 29) and Sybil Mary Grey Duchess St Albans 1848-1871 (age 21).
On 07 Sep 1871 [his mother] Sybil Mary Grey Duchess St Albans 1848-1871 (age 22) died.
On 03 Jan 1874 [his father] William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 (age 33) and [his step-mother] (age 26) were married at Newtown Anner, County Tipperary. She by marriage Duchess St Albans. He the son of William Beauclerk 9th Duke St Albans and (age 56). He a great x 4 grandson of King Charles II of England Scotland and Ireland.
On 10 May 1898 [his father] William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 (age 58) died. On His son Charles De Vere Beauclerk 11th Duke St Albans (age 28) succeeded 11th Duke St Albans, 11th Earl Burford, 11th Baron Heddington.
On 19 Sep 1934 Charles De Vere Beauclerk 11th Duke St Albans (age 64) died. His brother [his half-brother] Osborne De Vere Beauclerk 12th Duke St Albans 1874-1964 (age 59) succeeded 12th Duke St Albans, 12th Earl Burford, 12th Baron Heddington. Beatrix Petty-Fitzmaurice Duchess St Albans 1877-1953 (age 57) by marriage Duchess St Albans.
Paternal Family Tree: Stewart
Maternal Family Tree: Caroline Eliza Farquhar 1814-1890
Kings Wessex: Great x 24 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 21 Grand Son of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 26 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 22 Grand Son of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 5 Grand Son of King Charles II of England Scotland and Ireland
Kings Scotland: Great x 17 Grand Son of Robert "The Bruce" I King Scotland
Kings Franks: Great x 20 Grand Son of Louis VII King Franks
Kings France: Great x 7 Grand Son of Henry IV King France
Great x 4 Grandfather: Charles Beauclerk 1st Duke St Albans Son of King Charles II of England Scotland and Ireland
Great x 3 Grandfather: Vere Beauclerk 1st Baron de Vere Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandmother: Diana Vere Duchess St Albans 1679-1742 10 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: Aubrey Beauclerk 5th Duke St Albans 1740-1802 Great Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Thomas Chambers
Great x 3 Grandmother: Mary Chambers Baroness Spencer 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Mary Berkeley 9 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: William Beauclerk 8th Duke St Albans 1766-1825 2 x Great Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: Brabazon Ponsonby 1st Earl Bessborough 1679-1758 11 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: William Ponsonby 2nd Earl Bessborough 12 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Sarah Margetson 13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandmother: Catherine Ponsonby Duchess St Albans 1742-1789 12 x Great Grand Daughter of Henry IV King England
Great x 4 Grandfather: William Cavendish 3rd Duke Devonshire 10 x Great Grand Son of Henry IV King England
Great x 3 Grandmother: Caroline Cavendish Countess Bessborough 1719-1760 11 x Great Grand Daughter of Henry IV King England
GrandFather: William Beauclerk 9th Duke St Albans 3 x Great Grand Son of King Charles II of England Scotland and Ireland
Father: William Amelius Aubrey Beauclerk 10th Duke St Albans 1840-1898 4 x Great Grand Son of King Charles II of England Scotland and Ireland
Charles De Vere Beauclerk 11th Duke St Albans 1870-1934 5 x Great Grand Son of King Charles II of England Scotland and Ireland
Great x 4 Grandfather: John Grey 11 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Henry Grey 1st Baronet 12 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Margaret Person
Great x 2 Grandfather: Charles Grey 1st Earl Grey 13 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Wood of Fallodon, Northumberland
Great x 3 Grandmother: Hannah Wood
Great x 1 Grandfather: Charles Grey 2nd Earl Grey 13 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: George Grey
Great x 2 Grandmother: 12 x Great Grand Daughter of King Edward III of England
Great x 4 Grandfather: Nathaniel Ogle 10 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Elizabeth Ogle 11 x Great Grand Daughter of King Edward III of England
GrandFather: Charles Grey 14 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Brabazon Ponsonby 1st Earl Bessborough 1679-1758 11 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandfather: John Ponsonby 12 x Great Grand Son of King Edward "Longshanks" I of England
Great x 4 Grandmother: Sarah Margetson 13 x Great Grand Daughter of King Edward "Longshanks" I of England
Great x 2 Grandfather: William Ponsonby 1st Baron Ponsonby of Imokilly in County Cork 12 x Great Grand Son of Henry IV King England
Great x 4 Grandfather: William Cavendish 3rd Duke Devonshire 10 x Great Grand Son of Henry IV King England
Great x 3 Grandmother: Elizabeth Cavendish 11 x Great Grand Daughter of Henry IV King England
Great x 1 Grandmother: Mary Elizabeth Ponsonby Countess Grey 1776-1861 13 x Great Grand Daughter of Henry IV King England
Mother: Sybil Mary Grey Duchess St Albans 1848-1871 15 x Great Grand Daughter of King Edward III of England
GrandMother: Caroline Eliza Farquhar