| Honorific-Prefix: | The Right Honourable |
| The Lord Romilly | |
| Birth Name: | John Gaspard Le Marchant Romilly |
| Birth Date: | 1 March 1866 |
| Parents: | William Romilly, 2nd Baron Romilly Emily Idonea Sophia Le Marchant |
| Relations: | John Romilly, 1st Baron Romilly (grandfather) Sir John Le Marchant (grandfather) |
| Branch: | Coldstream Guards Reserve of Officers |
| Rank: | Major |
| Battles: | Second Boer War |
John Gaspard Le Marchant Romilly, 3rd Baron Romilly (1 March 1866 – 23 June 1905) was a British hereditary peer and soldier.
Romilly was born on 1 March 1866. Of Huguenot ancestry from Montpellier,[1] he was the only child of William Romilly, 2nd Baron Romilly and, his first wife, the former Emily Idonea Sophia Le Marchant.[2] After his mother's death two weeks after his birth in 1866, his father remarried to Helen Denison (the eldest daughter of Edward Hanson Denison of Rusholme near Manchester) on 6 November 1872. In May 1891, his father and two servants died from smoke inhalation from a fire at his London residence.[3]
His paternal grandparents were the former Caroline Charlotte Otter (second daughter of Rt. Rev. William Otter, Bishop of Chichester) and the English Whig politician John Romilly, 1st Baron Romilly who served in Lord John Russell's first administration as Solicitor-General and later as Attorney-General. He was the second son of Sir Samuel Romilly, MP, and the older brother of Frederick Romilly, MP. His maternal grandparents were the former Margaret Anne Taylor (third daughter of Rev. Robert Taylor of Clifton Campville) and Lt.-Gen. Sir John Gaspard Le Marchant, who served as Governor of Newfoundland, Lieutenant Governor of Nova Scotia, and Governor of Malta. His grandfather was the son of Maj.-Gen. John Le Marchant and the younger brother of Sir Denis Le Marchant, 1st Baronet.[4]
Following his father's death in May 1891,[3] he succeeded as the 3rd Baron Romilly.
From 1886 to 1888, he was a Lieutenant in the King's Royal Rifles, followed by a Captain of the Coldstream Guards in 1898. In 1900, he was made Captain of the Reserve of Officers and served in Second Boer War before being made a Major of the Reserve of Officers.
On 3 August 1897, Lord Romilly was married to Violet Edith Grey-Egerton (1870–1906) in London. She was the only daughter of Sir Philip Grey-Egerton, 11th Baronet of Oulton Park and the former Hon. Henrietta Elizabeth Sophia Denison (eldest daughter of Albert Denison, 1st Baron Londesborough).[5] Together, they were the parents of one son:
Lord Romilly died on 23 June 1905 and was succeeded by his only son William, upon whose death in 1983 the barony became extinct. His widow died less than a year later on 1 March 1906.[7]
| Escutcheon: | Argent in base a rock with nine points issuant from each a lily all Proper on a chief Azure a crescent between two mullets of the first. |
| Crest: | Upon a rock Proper a crescent Argent. |
| Supporters: | On either side a greyhound Argent gorged with a collar fleury counterfleury Azure and charged on the shoulder with a lily slipped Proper. |
| Motto: | Persevere[8] |