Seton Montolieu Montgomerie
The Hon. Seton Montolieu Montgomerie( 15 May 1846 – 26 November 1883) was the second son of Archibald Montgomerie, 13th Earl of Eglinton( 1812–1861).
Archibald Montgomerie, 18th Earl of Eglinton
Archibald George Montgomerie, 18th Earl of Eglinton and 6th Earl of Winton( 27 August 1939 – 14 June 2018), styled Lord Montgomerie until 1966, was the son of Archibald William Alexander Montgomerie, 17th Earl of Eglinton, and Ursula Joan Watson.
Lord Eglinton was educated at Eton.
He married Marion Carolina Dunn- Yarker, daughter of John Henry Dunn- Yarker and Elizabeth Adrienne Pinching, on 7 February 1964.
They had four sons: The Countess is a Patroness of the Royal Caledonian Ball.
He was initiated into freemasonry in Lodge Mother Kilwinning No. 0, under the Grand Lodge of Scotland.
He subsequently joined United Lodge of Prudence No.83 under the United Grand Lodge of England, and was appointed Senior Grand Warden in 1971, and served as Assistant Grand Master from 1989 until 1995.
Archibald Montgomerie, 17th Earl of Eglinton
Archibald William Alexander Montgomerie, 17th Earl of Eglinton (16 October 1914 – 21 April 1966) was the son of Archibald Montgomerie, 16th Earl of Eglinton.
He was educated at Eton and New College, Oxford.
On 10 November 1938, he married Ursula Joan Watson and they had four children:
William Sutherland, 17th Earl of Sutherland
William Sutherland, 17th Earl of Sutherland, previously named William Gordon, 17th Earl of Sutherland,( 2 October 1708 – 1750), was a Scottish politician who sat in the House of Commons from 1727 until 1733 when he succeeded to the peerage as Earl of Sutherland.
He was chief of the Clan Sutherland, a Scottish clan of the Scottish Highlands.
William Herbert, 18th Earl of Pembroke
William Alexander Sidney Herbert, 18th Earl of Pembroke, 15th Earl of Montgomery( born 18 May 1978) is an English peer.
He became earl in 2003 following the death of his father, Henry Herbert, 17th Earl of Pembroke.
George Montgomerie, 15th Earl of Eglinton
George Arnulph Montgomerie, 15th Earl of Eglinton, 3rd Earl of Winton( 23 February 1848 – 10 August 1919) was the third and youngest son of Archibald Montgomerie, 13th Earl of Eglinton and his first wife, Theresa Newcomen.
Archibald Montgomerie, 11th Earl of Eglinton
Archibald Montgomerie, 11th Earl of Eglinton( 18 May 172630 October 1796) was a Scottish General, and Member of Parliament( MP) in the British Parliament.
He was also the Clan Chief of the Clan Montgomery.
Montgomerie fought in the Seven Years' War, where he served with George Washington.
He also was the patron for the poet, Robert Burns.
Viva Seton Montgomerie
Viva Seton Montgomerie
( 1879 – 14 April 1959) was a British socialite and minor author, daughter of the Hon. Seton Montolieu Montgomerie( the second son of Archibald Montgomerie, 13th Earl of Eglinton) and his wife, Nina Janet Bronwen Peers Williams, daughter of Lt.- Col. Thomas Peers Williams.
Archibald Montgomerie, 16th Earl of Eglinton
Archibald Seton Montgomerie, 16th Earl of Eglinton and 4th Earl of Winton (23 June 1880 – 22 April 1945), was the son of George Arnulph Montgomerie, 15th Earl of Eglinton, and Janet Lucretia Montgomerie.
It was the 16th Earl who abandoned Eglinton Castle, the family seat or 'caput', in 1925.
He was educated at Eton College, served in World War I with the Life Guards and sat in the House of Lords as the 4th Earl of Winton.
On 1 June 1908, he married Lady Beatrice Susan Dalrymple, a daughter of the 11th Earl of Stair.
They were divorced in 1922 after having five children:
On 16 August 1922, he married Marjorie McIntyre and they had two children:
Janet Montgomerie, Countess of Eglinton
Janet Lucretia Montgomerie, Countess of Eglinton and Winton, DBE(" née" Cuninghame; – 6 October 1923) was a British Red Cross administrator and the wife of George Arnulph Montgomerie, 15th Earl of Eglinton.

Question: What is the date of birth of Archibald Montgomerie, 17Th Earl Of Eglinton's father?
Answer: 23 June 1880