Sir Henry St John-Mildmay, 4th Baronet

Sir Henry St John Carew St John-Mildmay, 4th Baronet (15 April 1787 – 17 January 1848), of Dogmersfield Park, Hampshire, was an English politician.

Early life
St John-Mildmay was born on 15 April 1787. He was the son of Sir Henry St John-Mildmay, 3rd Baronet of Dogmersfield Park and Jane Mildmay, the daughter and co-heiress of Carew Mildmay of Shawford House, Hampshire.

He was educated at Winchester School from 1798 to 1802, and Christ Church, Oxford, graduating in 1805.

Career
He was a Member of Parliament (MP) for Winchester 1807–1818 and Mayor of Winchester for 1808.

He succeeded his father in the baronetcy on 11 November 1808.

Personal life
On 7 August 1809 he married Charlotte Bouverie, the daughter of Hon. Bartholomew Bouverie and Mary Wyndham Arundell. Before her death following childbirth, they were the parents of one son:


 * Sir Henry Bouverie Paulet (1810–1902), who married Hon. Helena Shaw-Lefevre, daughter of Charles Shaw-Lefevre, 1st Viscount Eversley, in 1851.

In 1815, five years after Charlotte's untimely death from giving birth to their son, he eloped with her sister Harriet, Countess of Rosebery ( Bouverie), the wife of Archibald Primrose, 4th Earl of Rosebery in Stuttgart, Württemberg. Before Harriet eventually left him, they had three sons:


 * Edmund Henry St John-Mildmay (1815–1905), who married Louisa Josephine Saunders, former wife of Sir Henry de Hoghton, 9th Baronet. After her death in 1865, he married his cousin, Augusta Jane St John-Mildmay, daughter of the Ven. Carew Antony St John-Mildmay.
 * Horace Osborne St John-Mildmay (1817–1866), an officer in the 5th Austrian Hussars; he married Jane Dombach in 1844.
 * Augustus Fitzwalter St John-Mildmay (d. 1839), an officer in the 7th Austrian Hussars; he died unmarried.

Plagued by financial problems, he shot himself on 17 January 1848.