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] (age 17) were married at St Mildred's Church, Bread Street.
On 26 Dec 1793 Brownlow Cecil 9th Earl Exeter 1725-1793 (age 68) died. His nephew [his father] Henry Cecil 1st Marquess Exeter (age 39) succeeded 10th Earl Exeter, 11th Baron Burghley. [his mother] (age 19) by marriage Countess Exeter.
On 02 Jul 1795 Brownlow Cecil 2nd Marquess Exeter was born to Henry Cecil 1st Marquess Exeter (age 41) and (age 21).
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 Brownlow Cecil 2nd Marquess Exeter (age 8) succeeded 2nd Marquess Exeter, 11th Earl Exeter, 12th Baron Burghley.
On 12 May 1824 Brownlow Cecil 2nd Marquess Exeter (age 28) and Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 21) were married. She by marriage Marchioness Exeter. He the son of Henry Cecil 1st Marquess Exeter and .
On 30 Apr 1825 [his son] William Alleyne Cecil 3rd Marquess Exeter was born to Brownlow Cecil 2nd Marquess Exeter (age 29) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 22).
In 1827 [his son] Brownlow Thomas Montagu Cecil was born to Brownlow Cecil 2nd Marquess Exeter (age 31) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 23).
In 1827 Brownlow Cecil 2nd Marquess Exeter (age 31) was appointed 664th Knight of the Garter by King George IV of Great Britain and Ireland (age 64).
In 1832 [his daughter] Mary Frances Cecil Countess Harrowby Lincolnshire 1832-1917 was born to Brownlow Cecil 2nd Marquess Exeter (age 36) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 28).
On 25 Dec 1834 [his son] Edward Cecil was born to Brownlow Cecil 2nd Marquess Exeter (age 39) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 31).
In Jul 1835 Horace Beauchamp Seymour-Conway (age 43) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 32) were married. They were third cousins. He a great x 3 grandson of King James II of England Scotland and Ireland. 
In 1841 [his son] Adelbert Percy Cecil was born to Brownlow Cecil 2nd Marquess Exeter (age 45) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 37).
In 1843 [his daughter] Victoria Cecil Baroness Carbery was born to Brownlow Cecil 2nd Marquess Exeter (age 47) and [his wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 39).
In 1861 [his son-in-law] Dudley Ryder 3rd Earl of Harrowby 1831-1900 (age 29) and [his daughter] Mary Frances Cecil Countess Harrowby Lincolnshire 1832-1917 (age 29) were married. She the daughter of Brownlow Cecil 2nd Marquess Exeter 1795-1867 (age 65) and Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 57). He the son of Dudley Ryder 2nd Earl of Harrowby 1798-1882 (age 62) and Frances Stuart Countess Harrowby Lincolnshire -1859.
On 12 Sep 1862 [his son] Edward Cecil (age 27) died.
On 16 Jan 1867 Brownlow Cecil 2nd Marquess Exeter (age 71) died. His son [his son] William Alleyne Cecil 3rd Marquess Exeter (age 41) succeeded 3rd Marquess Exeter, 12th Earl Exeter, 13th Baron Burghley.
He was buried at St Martin's Church, Stamford [Map].
On 06 Mar 1879 [his former wife] Frances Isabella Selina Poyntz Marchioness of Exeter 1803-1879 (age 76) died.
Paternal Family Tree: Cecil
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 1100-1170
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 1047-1132
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 1628-1678 5 x Great Grand Son of King Henry VII of England and Ireland
Great x 3 Grandfather: John Cecil 5th Earl Exeter 1648-1700 6 x Great Grand Son of King Henry VII of England and Ireland
Great x 4 Grandmother: Frances Manners Countess Exeter 1630-1660
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 1619-1689 8 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Brownlow Cecil 8th Earl Exeter 1701-1754 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 1681-1723
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
Brownlow Cecil 2nd Marquess Exeter 1795-1867 11 x Great Grand Son of King Henry VII of England and Ireland