Edmund Mortimer, 3rd Earl of March
Edmund de Mortimer, 3rd Earl of March and" jure uxoris" Earl of Ulster( 1 February 135227 December 1381) was son of Roger Mortimer, 2nd Earl of March, by his wife Philippa, daughter of William Montagu, 1st Earl of Salisbury and Catherine Grandison.
Thomas Bruce, 2nd Earl of Ailesbury
Thomas Bruce, 2nd Earl of Ailesbury( later styled Aylesbury) and 3rd Earl of Elgin( 1656 – 16 December 1741) was an English politician and memoirist.
He was the son of Robert Bruce, 2nd Earl of Elgin, and Lady Diana Grey.
His maternal grandparents were Henry Grey, 1st Earl of Stamford, and Lady Anne Cecil, daughter of William Cecil, 2nd Earl of Exeter.
His" Memoirs", which were not published until long after his death, are a valuable source for English history in the last quarter of the seventeenth century.
Granville Eliot, 7th Earl of St Germans
Granville John Eliot, 7th Earl of St Germans( 22 September 1867 – 20 November 1942) was an English aristocrat.
Nicholas Eliot, 9th Earl of St Germans
Nicholas Richard Michael Eliot, 9th Earl of St Germans( 26 January 1914, Marylebone, London – 11 March 1988), was a British peer.
Eliot was the son of Montague Eliot, 8th Earl of St Germans and Helen Agnes née Post.
He was educated at Eton and became a Captain in the Duke of Cornwall's Light Infantry, attached to the Royal Armoured Corps.
He was a Justice of the Peace and DL.
On 16 September 1960, he succeeded his father to become the 9th Earl of St Germans.
Gilbert Kennedy, 2nd Earl of Cassilis
Gilbert Kennedy, 2nd Earl of Cassillis( died between 24 and 30 August 1527) was a Scottish nobleman, the son of David Kennedy, 1st Earl of Cassilis and Agnes, daughter of William Borthwick, 3rd Lord Borthwick.
He was married to Lady Isabel Campbell, daughter of Archibald Campbell, 2nd Earl Argyll and Elizabeth Stewart.
Children of Gilbert Kennedy, 2nd Earl of Cassillis and Lady Isabel Campbell:
Henry Eliot, 5th Earl of St Germans
Henry Cornwallis Eliot, 5th Earl of St Germans( 11 February 1835 – 24 September 1911) Henry Cornwallis Eliot was born in London on 11 February 1835 to Edward Granville Eliot, 3rd Earl of St Germans and his wife Jemima née Cornwallis( 24 December 1803 – 2 July 1856).
Henry was educated at Eton College from 1845 to 1847, and served as a Midshipman in the Royal Navy in the Mediterranean Sea from 1848 to 1853.
He was appointed as a Junior Clerk in the Foreign Office on 28 January 1855, where he worked until he succeeded to the Peerage in 1881.
In July 1867, he was Secretary to a special mission of Earl Vane to St Petersburg to invest the Emperor of Russia with the Order of the Garter.
He was an Assistant Clerk from 1872 until the death of his older brother William Gordon Cornwallis Eliot, 4th Earl of St Germans on 19 March 1881 when he succeeded as 5th Earl of St Germans.
In the 1881 Census, he was living at 13 Grosvenor Gardens, St George Hanover Square, London
John Eliot, 6th Earl of St Germans
John Granville Cornwallis Eliot, 6th Earl of St Germans, MC was born on 11 June 1890 at 13 Grosvenor Gardens, London to Henry Cornwallis Eliot, 5th Earl of St Germans( 11 February 1835 – 24 September 1911) and his wife Emily Harriett Labouchere( 24 June 1844 – 18 October 1933).
He was educated at a college in St Peter Intra, Broadstairs, Kent and at the Royal Military College, Sandhurst.
He subsequently became a Captain in the 2nd Dragoons of the Scots Greys, and fought in the First World War, being awarded the Military Cross.
William Eliot, 2nd Earl of St Germans
William Eliot, 2nd Earl of St Germans (1 April 1767 – 19 January 1845), known as William Elliot until 1823, was a British diplomat and politician.
Eliot was born at Port Eliot, Cornwall, the third son of Edward Craggs-Eliot, 1st Baron Eliot and his wife Catherine (née Elliston).
He was educated at Pembroke College, Cambridge, taking an M.A. in 1786.
From November 1791 until 1793 he was a Secretary of Legation at Berlin, from 1793 to 1794 Secretary of Embassy and Minister Plenipotentiary at The Hague and from 1796 Minister Plenipotentiary to the Elector Palatine and to the Diet of Ratisbon.
Eliot also sat as Tory Member of Parliament for St Germans from 1791 to 1802 and for Liskeard from 1802 to 1823.
He served as a Lord of the Admiralty from 1800 to 1804, as Parliamentary Under-Secretary of State for Foreign Affairs from 1804 to 1805 and as one of the Lords Commissioners of the Treasury from 1807 to 1812.
In 1823 he succeeded his elder brother as second Earl of St Germans and entered the House of Lords.
Edward Craggs-Eliot, 1st Baron Eliot
Edward Craggs-Eliot, 1st Baron Eliot (London, 8 July 1727 – 17 February 1804, Port Eliot, Cornwall) was an English official and politician who sat in the House of Commons from 1748 to 1784 when he was raised to the peerage as Baron Eliot.
Jago Eliot
Jago Nicholas Aldo Eliot, Lord Eliot( 24 March 1966 – 15 April 2006) was the son of Peregrine Eliot, 10th Earl of St Germans, and Jacquetta Eliot, Countess of St Germans( née Lampson).

Question: What is the date of death of William Eliot, 2Nd Earl Of St Germans's father?
Answer: 17 February 1804