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John Fremantle

1790 – 1845

(1790-1845) Major General and Colonel of the Coldstream Guards. He fought in the Peninsular Wars.

Aide-de-campSoldier
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About John Fremantle

Lived 1790 – 1845 (aged 54–55). John Fremantle was an aide-de-camp and soldier.

Lieutenant-general John Fremantle (1790–1845) was a British Army officer of the Napoleonic Era.

Life He was the eldest son of Colonel Stephen Fremantle, by Albinia, daughter of Sir John Jeffrys, Bart., and after his father died when he was four, he was mentored by his uncle William. He joined the 2nd Foot Guards on 17October 1805 following an education at the Royal Military College, High Wycombe and Lüneburg University. He joined the army in Bremen as an ensign under Lord Cathcart.

He took part in the 1806–07 expedition to seize Buenos Aires from the Spanish Empire as aide-de-camp (ADC) to General John Whitelocke where he was taken prisoner while fighting with the Rifle Corps.

Promoted to Lieutenant and Captain on 2August 1810, as private secretary he accompanied Lord Howden to Lisbon where he served in most of the actions of the Peninsular War as adjutant until 1812 when he was appointed extra ADC. During the war he carried despatchs to England announcing the battles of Vitoria (1813) and Orthez (1814)

In 1813 he was appointed ADC and private secretary to the Duke of Wellington and was present at the Battle of Waterloo.

After hostilities ceased, Fremantle remained in France with the Army of Occupation and was empowered by the Duke of Wellington to ratify the Convention of St. Cloud on 7July 1815.

Fremantle died in London in 1854.

Family On 17February 1829 he married Agnes, third daughter of David Lyon from whom she inherited £50,000. They had the following issue: Arthur Lyon Fremantle (1835–1901) who followed his father into the army and witnessed the Battle of Gettysburg during the American Civil War. Fitzroy Fremantle, became a major-general in the British Army and served in Crimea under FitzRoy Somerset, 1st Baron Raglan, after whom he was named. Delvin Fremantle, whose daughter Lelia Hope Fremantle married noted admiral Sydney Fremantle. John Fremantle Augusta Fremantle Frances Fremantle Agnes died in Rome on 20February 1864.

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Important facts

Born
1790
Birth century
Died
1845
Occupation
Aide-de-camp, soldier
Awards
Companion of the Order of the Bath
Also known as
Major General John Fremantle, John William Fremantle, Maj.-Gen. John Fremantle

People in John Fremantle's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped John Fremantle's

Frequently asked questions

Who was John Fremantle?

(1790-1845) Major General and Colonel of the Coldstream Guards. He fought in the Peninsular Wars.

When was John Fremantle born?

John Fremantle was born in 1790.

When did John Fremantle die?

John Fremantle died in 1845.

What was John Fremantle's occupation?

John Fremantle was an aide-de-camp and soldier.

Sources & further reading

· Wikipedia: John Fremantle

· Wikidata: Q23614532

· DBpedia: John Fremantle (British Army officer)

Cite this page

APA: Biography.guide. (2026). John Fremantle. https://biography.guide/john-fremantle/

MLA: "John Fremantle." Biography.guide, https://biography.guide/john-fremantle/.

Chicago: "John Fremantle." Biography.guide. https://biography.guide/john-fremantle/.

Data last updated: 2026-09-23 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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