On 21 Aug 1844 [her father] William Compton 4th Marquess Northampton 1818-1897 (age 26) and [her step-mother] Eliza Harriet Elliot Marchioness Northampton 1820-1877 (age 24) were married at Naples. He the son of Spencer Compton 2nd Marquess Northampton (age 54) and .
In 1845 Katrine Cecilia Compton Countess Cowper was born to William Compton 4th Marquess Northampton 1818-1897 (age 27).
On 15 Apr 1856 George Augustus Frederick Cowper 6th Earl Cowper 1806-1856 (age 49) died. His son [her future husband] Francis Thomas Cowper 7th Earl Cowper (age 21) succeeded 7th Earl Cowper, 6th Baron Cowper of Wingham in Kent, 8th Baronet Cowper of Ratling Court in Kent.
In 1870 Francis Thomas Cowper 7th Earl Cowper (age 35) and Katrine Cecilia Compton Countess Cowper (age 25) were married. She by marriage Countess Cowper. She the daughter of William Compton 4th Marquess Northampton 1818-1897 (age 52). He the son of George Augustus Frederick Cowper 6th Earl Cowper 1806-1856 and Ann Florence Robinson Countess Cowper 1806-1880 (age 64).
In 1871 Auberon Edward William Molyneux Howard Herbert (age 32) and [her sister-in-law] Florence Amabel Cowper (age 34) were married. She the daughter of George Augustus Frederick Cowper 6th Earl Cowper 1806-1856 and Ann Florence Robinson Countess Cowper 1806-1880 (age 65). He the son of Henry John George Herbert 3rd Earl Carnarvon and Henrietta Anna Howard-Molyneux-Howard Countess Carnarvon 1804-1876 (age 66).
On 18 Nov 1873 Walter Talbot Kerr (age 34) and [her sister-in-law] Amabel Frederica Henrietta Cowper (age 27) were married. She the daughter of George Augustus Frederick Cowper 6th Earl Cowper 1806-1856 and Ann Florence Robinson Countess Cowper 1806-1880 (age 67). He the son of John Kerr 7th Marquess Lothian 1794-1841 and Cecil Chetwynd-Talbot Marchioness Lothian 1808-1877 (age 65).
On 03 Mar 1877 [her uncle] Charles Compton 3rd Marquess Northampton 1816-1877 (age 61) died without issue. His brother [her father] William Compton 4th Marquess Northampton 1818-1897 (age 59) succeeded 4th Marquess Northampton, 12th Earl of Northampton, 4th Earl Compton of Compton in Warwickshire, 4th Baron Wilmington of Wilmington in Sussex. [her step-mother] Eliza Harriet Elliot Marchioness Northampton 1820-1877 (age 57) by marriage Marchioness Northampton.
In 1880 [her mother-in-law] Ann Florence Robinson Countess Cowper 1806-1880 (age 74) died. Her son [her husband] Francis Thomas Cowper 7th Earl Cowper (age 45) succeeded 8th Baron Lucas of Crudwell.
In 1886 [her sister-in-law] Florence Amabel Cowper (age 49) died.
In 1887 [her brother-in-law] Henry Frederick Cowper (age 51) died.
In 1897 [her father] William Compton 4th Marquess Northampton 1818-1897 (age 79) died. His son [her half-brother] William George Spencer Scott Compton 5th Marquess Northampton 1851-1913 (age 45) succeeded 5th Marquess Northampton, 13th Earl of Northampton, 5th Earl Compton of Compton in Warwickshire, 5th Baron Wilmington of Wilmington in Sussex. Mary Florence Baring Marchioness Northampton 1860-1902 (age 36) by marriage Marchioness Northampton.
On 18 Jul 1905 [her husband] Francis Thomas Cowper 7th Earl Cowper (age 71) died. Earl Cowper, Baron Cowper of Wingham in Kent and Baronet Cowper of Ratling Court in Kent extinct. His nephew Auberon Herbert 9th Baron Lucas (age 29) succeeded 9th Baron Lucas of Crudwell.
On 15 Oct 1906 [her former sister-in-law] Amabel Frederica Henrietta Cowper (age 60) died.
Before 1907. Edward Clifford (age 62). Portrait of Katrine Cecilia Compton Countess Cowper (age 61).
On 23 Mar 1913 Katrine Cecilia Compton Countess Cowper (age 68) died.
Paternal Family Tree: Compton
Kings Wessex: Great x 25 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 22 Grand Daughter of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 27 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 23 Grand Daughter of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 15 Grand Daughter of King Edward III of England
Kings Scotland: Great x 20 Grand Daughter of William "Lion" I King Scotland
Kings Franks: Great x 21 Grand Daughter of Louis VII King Franks
Kings France: Great x 17 Grand Daughter of Philip "The Fair" IV King France
Great x 4 Grandfather: George Compton 4th Earl of Northampton 9 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Charles Compton 10 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Jane Fox Countess Northampton
Great x 2 Grandfather: Spencer Compton 8th Earl of Northampton 11 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Berkeley Lucy 3rd Baronet
9 x Great Grand Son of King Edward III of England
Great x 3 Grandmother: Mary Lucy 10 x Great Grand Daughter of King Edward III of England
Great x 4 Grandmother: Catherine Cotton 9 x Great Grand Daughter of King Edward III of England
Great x 1 Grandfather: Charles Compton 1st Marquess Northampton 12 x Great Grand Son of King Edward III of England
GrandFather: Spencer Compton 2nd Marquess Northampton 13 x Great Grand Son of King Edward III of England
Father: William Compton 4th Marquess Northampton 1818-1897 14 x Great Grand Son of King Edward III of England
Katrine Cecilia Compton Countess Cowper 1845-1913 15 x Great Grand Daughter of King Edward III of England