On 23 Jun 1774 [her father] Edward Smith-Stanley 12th Earl of Derby (age 21) and Elizabeth Hamilton Countess Derby (age 21) were married. She the daughter of James Hamilton 6th Duke Hamilton 3rd Duke Brandon and Elizabeth Gunning Duchess Hamilton and Argyll (age 40).
On 22 Feb 1776 Edward Stanley 11th Earl of Derby (age 86) died. His grandson [her father] Edward Smith-Stanley 12th Earl of Derby (age 23) succeeded 12th Earl Derby, 6th Baronet Stanley of Bickerstaffe. Elizabeth Hamilton Countess Derby (age 23) by marriage Countess Derby.
On 01 May 1797 [her father] Edward Smith-Stanley 12th Earl of Derby (age 44) and [her mother] (age 38) were married. She by marriage Countess Derby. The marriage taking place six weeks after the death of his estranged wife Elizabeth Hamilton Countess Derby.
Around 1801 Mary Smith-Stanley Countess Wilton was born to Edward Smith-Stanley 12th Earl of Derby (age 48) and (age 42).
On 23 Sep 1814 Thomas Egerton 1st Earl Wilton (age 65) died. His grandson [her future husband] Thomas Grosvenor 2nd Earl Wilton (age 14) succeeded 2nd Earl Wilton, 2nd Viscount Grey de Wilton. Baron Grey Wilton extinct. His fourth cousin John Grey Egerton 8th Baronet (age 48) succeeded 8th Baronet Egerton and Oulton.
On 29 Nov 1821 Thomas Grosvenor 2nd Earl Wilton (age 21) and Mary Smith-Stanley Countess Wilton (age 20) were married. She by marriage Countess Wilton. She the daughter of Edward Smith-Stanley 12th Earl of Derby (age 68) and (age 62). He the son of Robert Grosvenor 1st Marquess Westminster (age 54) and Eleanor Egerton Marchioness Westminster (age 51).
In 1823 [her daughter] Eleanor Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 23) and Mary Smith-Stanley Countess Wilton (age 22).
In 1824 [her daughter] Eleanor Egerton (age 1) died.
In 1825 [her son] Thomas Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 25) and Mary Smith-Stanley Countess Wilton (age 24).
In 1827 [her daughter] Mary Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 27) and Mary Smith-Stanley Countess Wilton (age 26).
In 1830 [her son] Thomas Egerton (age 5) died.
In 1830 [her daughter] Margaret Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 30) and Mary Smith-Stanley Countess Wilton (age 29).
In 1831 [her brother-in-law] Robert Grosvenor 1st Baron Ebury (age 29) and Charlotte Arbuthnot Wellesley Baroness Ebury (age 23) were married. She the daughter of Henry Wellesley 1st Baron Cowley (age 57) and Charlotte Cadogan Marchioness Anglesey (age 49). He the son of Robert Grosvenor 1st Marquess Westminster (age 63) and Eleanor Egerton Marchioness Westminster (age 60).
In 1831 [her son] Arthur Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 31) and Mary Smith-Stanley Countess Wilton (age 30).
In 1831 [her son] Arthur Egerton died.
In 1831 [her daughter] Margaret Egerton (age 1) died.
On 05 Jul 1832 [her daughter] Elizabeth Egerton Baroness Ros Helmsley was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 32) and Mary Smith-Stanley Countess Wilton (age 31).
In 1833 [her son] Arthur Egerton 3rd Earl Wilton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 33) and Mary Smith-Stanley Countess Wilton (age 32).
On 21 Oct 1834 [her father] Edward Smith-Stanley 12th Earl of Derby (age 81) died. His son [her half-brother] Edward Smith-Stanley 13th Earl of Derby (age 59) succeeded 13th Earl Derby, 7th Baronet Stanley of Bickerstaffe. by marriage Countess Derby.
In 1835 [her daughter] Katherine Grey Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 35) and Mary Smith-Stanley Countess Wilton (age 34).
In 1837 [her daughter] Emily Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 37) and Mary Smith-Stanley Countess Wilton (age 36).
In 1838 [her daughter] Mary Egerton (age 11) died.
In 1839 [her daughter] Emily Egerton (age 2) died.
On 20 Jan 1839 [her son] Seymour Egerton 4th Earl Wilton 1839-1898 was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 39) and Mary Smith-Stanley Countess Wilton (age 38).
In 1842 [her daughter] Alice Magdalene Grey Egerton was born to [her husband] Thomas Grosvenor 2nd Earl Wilton (age 42) and Mary Smith-Stanley Countess Wilton (age 41).
Adeline Horsey Recollections. I remember an amusing incident that happened when I was staying with [her husband] Lord (age 44) and Lady Wilton (age 43) at Egerton Lodge Melton Mowbray, Leicestershire. Lord Wilton was a very handsome, fascinating man, and his numerous love affairs had gained for him the title of the "The Wicked Earl", in fact, many of the country people never called him anything else.
One Sunday Lady Wilton (age 43) and I went to church unaccompanied by Lord Wilton (age 44), who, whatever his failings might be, was usually most strict in his religious observances. Melton Church was then a very old-fashioned edifice, with high pews; and the clerk, who sat directly underneath the vicar's seat, was considered quite an important factor in the services.
I saw the clerk look at us as we entered the church, and he evidently noticed Lord Wilton's absence, but I was not prepared for what followed. The vicar duly commenced, "When the wicked ", but he was stopped by the clerk, who turned to him, and looking across at Lord Wilton's vacant seat said in a loud voice, "Please, sir, his Lordship's not come yet!".
On 12 Oct 1853 [her son-in-law] Dudley Fitzgerald De Ros 23rd Baron Ros Helmsley (age 26) and [her daughter] Elizabeth Egerton Baroness Ros Helmsley (age 21) were married at Heaton. She the daughter of Thomas Grosvenor 2nd Earl Wilton (age 53) and Mary Smith-Stanley Countess Wilton 1801-1858 (age 52). He a great x 4 grandson of King Charles II of England Scotland and Ireland. 
In Sep 1857 [her brother-in-law] Robert Grosvenor 1st Baron Ebury (age 56) was created 1st Baron Ebury. Charlotte Arbuthnot Wellesley Baroness Ebury (age 49) by marriage Baroness Ebury.
On 11 Aug 1858 [her son] Arthur Egerton 3rd Earl Wilton (age 25) and [her daughter-in-law] Elizabeth Charlotte Louisa Craven Countess Wilton (age 22) were married. There was no issue from the marriage. She the daughter of William Craven 2nd Earl Craven (age 48) and Emily Mary Grimston Countess Craven 1816-1901 (age 42). He the son of Thomas Grosvenor 2nd Earl Wilton (age 58) and Mary Smith-Stanley Countess Wilton 1801-1858 (age 57). She a great x 5 granddaughter of King Charles II of England Scotland and Ireland. 
In Dec 1858 Mary Smith-Stanley Countess Wilton (age 57) died.
On 12 Sep 1863 [her former husband] Thomas Grosvenor 2nd Earl Wilton (age 63) and (age 21) were married. She by marriage Countess Wilton. The difference in their ages was 42 years. He the son of Robert Grosvenor 1st Marquess Westminster and Eleanor Egerton Marchioness Westminster.
On 07 Mar 1882 [her former husband] Thomas Grosvenor 2nd Earl Wilton (age 82) died. His son [her son] Arthur Egerton 3rd Earl Wilton (age 49) succeeded 3rd Earl Wilton, 3rd Viscount Grey de Wilton. [her daughter-in-law] Elizabeth Charlotte Louisa Craven Countess Wilton (age 45) by marriage Countess Wilton.
Paternal Family Tree: Stanley
Kings Wessex: Great x 23 Grand Daughter of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 20 Grand Daughter of Owain "Great" King Gwynedd 1100-1170
Kings Seisyllwg: Great x 26 Grand Daughter of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 21 Grand Daughter of Maredudd ap Bleddyn King Powys 1047-1132
Kings England: Great x 13 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 19 Grand Daughter of Louis VII King Franks
Kings France: Great x 15 Grand Daughter of Philip "The Fair" IV King France
Great x 4 Grandfather: Thomas Stanley 2nd Baronet 7 x Great Grand Son of King Edward III of England
Great x 3 Grandfather: Edward Stanley 3rd Baronet 8 x Great Grand Son of King Edward III of England
Great x 4 Grandmother: Mary Edgerton married Thomas Stanley
Great x 2 Grandfather: Thomas Horton Stanley 4th Baronet 9 x Great Grand Son of King Edward III of England
Great x 4 Grandfather: Thomas Bosville
Great x 3 Grandmother: Elizabeth Bosville
Great x 1 Grandfather: Edward Stanley 11th Earl of Derby 10 x Great Grand Son of King Edward III of England
Great x 2 Grandmother: Elizabeth Patten
GrandFather: James Stanley "Lord Strange" 11 x Great Grand Son of King Edward III of England
Father: Edward Smith-Stanley 12th Earl of Derby 12 x Great Grand Son of King Edward III of England
Great x 1 Grandfather: Hugh Smith of Weald Hall Essex
GrandMother: Lucy Smith
Mary Smith-Stanley Countess Wilton 1801-1858 13 x Great Grand Daughter of King Edward III of England
