Biography of Thomas Cecil 1797-1873
Paternal Family Tree: Cecil
In 1776 [his father] Henry Cecil 1st Marquess Exeter (age 21) and Emma Vernon were married.
On 03 Oct 1791 [his father] Henry Cecil 1st Marquess Exeter (age 37) and [his mother] Sarah Hoggins Countess Exeter (age 17) were married at St Mildred's Church, Bread Street.
On 26 Dec 1793 Brownlow Cecil 9th Earl Exeter (age 68) died. His nephew [his father] Henry Cecil 1st Marquess Exeter (age 39) succeeded 10th Earl Exeter, 11th Baron Burghley. [his mother] Sarah Hoggins Countess Exeter (age 19) by marriage Countess Exeter.
On 01 Jan 1797 Thomas Cecil was born to Henry Cecil 1st Marquess Exeter (age 42) and Sarah Hoggins Countess Exeter.
In 1800 [his father] Henry Cecil 1st Marquess Exeter (age 45) and [his step-mother] Elizabeth Anne Burrell Duchess Hamilton Duchess Brandon (age 42) were married. She by marriage Countess Exeter.
In Feb 1801 [his father] Henry Cecil 1st Marquess Exeter (age 46) was created 1st Marquess Exeter. [his step-mother] Elizabeth Anne Burrell Duchess Hamilton Duchess Brandon (age 43) by marriage Marchioness Exeter.
On 01 May 1804 [his father] Henry Cecil 1st Marquess Exeter (age 50) died. His son [his brother] Brownlow Cecil 2nd Marquess Exeter (age 8) succeeded 2nd Marquess Exeter, 11th Earl Exeter, 12th Baron Burghley.
Around 1809 Thomas Cecil (age 11) educated at Eton College [Map].
In 1815 Thomas Cecil (age 17) graduated at St John's College, Cambridge University [Map].
In 1818 Thomas Cecil (age 20) was appointed MP Stamford.
On 11 Mar 1820 Charles Augustus Fitzroy (age 23) and [his future sister-in-law] Mary Lennox (age 29) were married. She the daughter of Charles Lennox 4th Duke Richmond and Charlotte Gordon Duchess Richmond (age 51). He a great x 4 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
On 07 Jun 1824 William Fitzgerald De Ros 22nd Baron Ros Helmsley (age 26) and [his future sister-in-law] Georgiana Lennox Baroness Ros Helmsley (age 28) were married. She the daughter of Charles Lennox 4th Duke Richmond and Charlotte Gordon Duchess Richmond (age 55). They were second cousins. He a great x 3 grandson of King Charles II of England Scotland and Ireland. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
On 08 Aug 1838 Thomas Cecil (age 41) and Sophia Georgiana Lennox (age 29) were married. She the daughter of Charles Lennox 4th Duke Richmond and Charlotte Gordon Duchess Richmond (age 69). He the son of Henry Cecil 1st Marquess Exeter and Sarah Hoggins Countess Exeter. She a great x 3 granddaughter of King Charles II of England Scotland and Ireland.
On 07 Dec 1847 [his sister-in-law] Mary Lennox (age 57) died in a carriage accident in Parramata Western Sydney.
On 27 Mar 1861 [his sister-in-law] Jane Lennox (age 61) died.
On 15 Jan 1864 [his brother-in-law] Arthur Lennox (age 57) died.
On 08 Sep 1873 [his sister-in-law] Sarah Lennox (age 79) died.
On 10 Nov 1873 [his brother-in-law] John George Lennox (age 80) died.
On 29 Nov 1873 Thomas Cecil (age 76) died.
Kings Wessex: Great x 23 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 19 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 20 Grand Son of Maredudd ap Bleddyn King Powys
Kings England: Great x 11 Grand Son of King Henry VII of England and Ireland
Kings Scotland: Great x 18 Grand Son of William "Lion" I King Scotland
Kings Franks: Great x 20 Grand Son of Louis VII King Franks
Kings France: Great x 14 Grand Son of Charles "Beloved Mad" VI King France
Great x 4 Grandfather: John Cecil 4th Earl Exeter 5 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandfather: John Cecil 5th Earl Exeter 6 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Frances Manners Countess Exeter
8 x Great Grand Daughter of King Edward III of England
Great x 2 Grandfather: John Cecil 6th Earl Exeter 7 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: William Cavendish 3rd Earl Devonshire
10 x Great Grand Son of King Edward "Longshanks" I of England
Great x 3 Grandmother: Anne Cavendish Countess Exeter 9 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Elizabeth Cecil Countess Devonshire 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Brownlow Cecil 8th Earl Exeter 8 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandfather: Richard Brownlow 2nd Baronet
Great x 3 Grandfather: John Brownlow 3rd Baronet
Great x 4 Grandmother: Elizabeth Freke Lady Brownlow
Great x 2 Grandmother: Elizabeth Brownlow Countess Exeter
Great x 4 Grandfather: Richard Sherard of Lobthorpe
Great x 3 Grandmother: Alice Sherard Baroness Brownlow
Great x 4 Grandmother: Margaret Dewe
GrandFather: Thomas Cecil 9 x Great Grand Son of King Henry VII of England and Ireland
Father: Henry Cecil 1st Marquess Exeter 10 x Great Grand Son of King Henry VII of England and Ireland
Thomas Cecil 11 x Great Grand Son of King Henry VII of England and Ireland
GrandFather: Thomas Hoggins
Mother: Sarah Hoggins Countess Exeter