Biography of Henry St John-Mildmay 4th Baronet 1787-1848
Paternal Family Tree: St John Mildmay
Maternal Family Tree: Jane Mildmay
In 1784 [his grandfather] Henry St John-Mildmay 2nd Baronet (age 47) died. His son [his father] Henry Paulet St John-Mildmay 3rd Baronet (age 19) succeeded 3rd Baronet St John-Mildmay of Farley in Southampton.
In 1786 [his father] Henry Paulet St John-Mildmay 3rd Baronet (age 21) and [his mother] Jane Mildmay were married.
On 15 Apr 1787 Henry St John-Mildmay 4th Baronet was born to Henry Paulet St John-Mildmay 3rd Baronet (age 22) and Jane Mildmay.
In 1808 Archibald Primrose 4th Earl Rosebery (age 24) and [his future wife] Harriett Bouverie Countess Camden (age 17) were married. He the son of Neil Primrose 3rd Earl Rosebery (age 79) and Mary Vincent Countess Rosebery (age 55).
On 11 Nov 1808 [his father] Henry Paulet St John-Mildmay 3rd Baronet (age 44) died. His son Henry St John-Mildmay 4th Baronet (age 21) succeeded 4th Baronet St John-Mildmay of Farley in Southampton.
On 07 Aug 1809 Henry St John-Mildmay 4th Baronet (age 22) and Charlotte Bouverie were married. He would later marry her sister Harriett Bouverie Countess Camden (age 18); an example of Married to Two Siblings.
In 1810 [his son] Henry St John-Mildmay 5th Baronet was born to Henry St John-Mildmay 4th Baronet (age 22) and [his wife] Charlotte Bouverie. His mother died in childbirth.
In 1815 Henry St John-Mildmay 4th Baronet (age 27) and Harriett Bouverie Countess Camden (age 24) were married. She the sister of his first wife Charlotte Bouverie; an example of Married to Two Siblings.
In 1815 [his son] Edmund Henry Mildmay was born to Henry St John-Mildmay 4th Baronet (age 27) and [his wife] Harriett Bouverie Countess Camden (age 24).
In 1815 Archibald Primrose 4th Earl Rosebery (age 31) divorced [his wife] Harriett Bouverie Countess Camden (age 24) after she eloped with Henry St John-Mildmay 4th Baronet (age 27) who had previously been married to her sister [his former wife] Charlotte Bouverie who had died in childbirth five years previously.
In 1817 [his son] Horace Osborne Mildmay was born to Henry St John-Mildmay 4th Baronet (age 29) and [his wife] Harriett Bouverie Countess Camden (age 26).
In 1826 [his step-daughter] Mary Anne Primrose (age 14) died.
Adeline Horsey Recollections. I made my first acquaintance with Newmarket, Suffolk when I was ten years old. I went there with my dear mother, and we stayed at the Rutland Arms Hotel, and I remember being very much interested at seeing handsome old Sir Henry Mildmay (age 46) lifted on his horse to ride to the course. People always rode or drove there, and there was only one stand, which was reserved for members of the Jockey Club and their friends.
On 09 Dec 1834 [his wife] Harriett Bouverie Countess Camden (age 44) died.
On 08 Mar 1839 [his son] Augustus Fitzwalter Mildmay died.
On 20 Sep 1843 [his former step-son] Archibald John Primrose (age 33) and Catherine Lucy Wilhelmina Stanhope Duchess of Cleveland (age 24) were married. She the daughter of Philip Henry Stanhope 4th Earl Stanhope (age 61) and Catherine Lucy Smith Countess Stanhope. He the son of Archibald Primrose 4th Earl Rosebery (age 59) and Harriett Bouverie Countess Camden.
On 17 Apr 1848 Henry St John-Mildmay 4th Baronet (age 61) shot himself. His son [his son] Henry St John-Mildmay 5th Baronet (age 38) succeeded 5th Baronet St John-Mildmay of Farley in Southampton.
[his son] Augustus Fitzwalter Mildmay was born to Henry St John-Mildmay 4th Baronet and Harriett Bouverie Countess Camden.
Great x 1 Grandfather: Paulet St John 1st Baronet 
GrandFather: Henry St John-Mildmay 2nd Baronet
Father: Henry Paulet St John-Mildmay 3rd Baronet
Great x 1 Grandfather: Abraham Tucker of Betchworth Castle
GrandMother: Dorothy Maria Tucker Lady St John Mildmay
Henry St John-Mildmay 4th Baronet
GrandFather: Carew Milday of Shawford House in Hampshire
Mother: Jane Mildmay