Henry Guinness1 
He was a partner of Guinness Mahon in 1850.1 He lived at Burton Hall, Stillorgan, County Dublin, IrelandG.1
Children of Henry Guinness and Emmelina Brown
- Ethel Mary Guinness3 d. 11 Apr 1940
- Amy Henrietta Guinness+3 d. 3 Nov 1955
- Eva Frances Guinness3
- Beatrice Grace Guinness3 d. 8 Nov 1944
- Henry Seymour Guinness+3 b. 24 Nov 1858, d. 4 Apr 1945
- Eustace Guinness+3 b. 14 Jun 1860, d. 30 Oct 1901
- Howard Rundell Guinness+3 b. 22 Mar 1863, d. 9 May 1937
- Geoffrey Gwynne Guinness+3 b. 17 Apr 1864, d. 10 May 1923
- Mary Katherine Guinness+3 b. c 1867, d. 28 Apr 1923
- Lucy Madeleine Guinness+3 b. 1870, d. 27 Dec 1950
- Richard Noel Guinness+3 b. 22 Dec 1870, d. 30 Sep 1960
- Constance Ellen Guinness3 b. 1876, d. 22 Dec 1964
James Brown1
Child of James Brown
- Emmelina Brown+2 d. 4 Oct 1906
Emmelina Brown1 
She lived Edinburgh.3 From 11 February 1858, her married name became Guinness.
Children of Emmelina Brown and Henry Guinness
- Ethel Mary Guinness2 d. 11 Apr 1940
- Amy Henrietta Guinness+2 d. 3 Nov 1955
- Eva Frances Guinness2
- Beatrice Grace Guinness2 d. 8 Nov 1944
- Henry Seymour Guinness+2 b. 24 Nov 1858, d. 4 Apr 1945
- Eustace Guinness+2 b. 14 Jun 1860, d. 30 Oct 1901
- Howard Rundell Guinness+2 b. 22 Mar 1863, d. 9 May 1937
- Geoffrey Gwynne Guinness+2 b. 17 Apr 1864, d. 10 May 1923
- Mary Katherine Guinness+2 b. c 1867, d. 28 Apr 1923
- Lucy Madeleine Guinness+2 b. 1870, d. 27 Dec 1950
- Richard Noel Guinness+2 b. 22 Dec 1870, d. 30 Sep 1960
- Constance Ellen Guinness2 b. 1876, d. 22 Dec 1964
Henry Seymour Guinness1 
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He was (an unknown value) at Royal Indian Engineering College, Cooper’s Hill, Surrey, EnglandG.1 He was an engineer with the Public Works Department between 1880 and 1895 at IndiaG.1 He fought in the Burma War in 1884.1 He gained the rank of Lieutenant in 1884 in the Burma State Railway Volunteer Rifles.1 He was registered as a Associate Member, Institution of Civil Engineers (A.M.I.C.E.)
in 1894.1 He held the office of High Sheriff of County Dublin in 1899.1 He was a director of the Great Northern Railway Ireland between 1902 and 1924.1 He was a director of the Bank of Ireland between 1910 and 1924.3 He held the office of Senator [Irish Free State] between 1922 and 1934.1 He was assistant managing director of Arthur Guinness, Son & Company between 1924 and 1930.1 He lived at Burton Hall, Stillorgan, County Dublin, IrelandG.1 He wrote the book The Guinness Family, published 1953, with Brian Guinness.1
Children of Henry Seymour Guinness and Mary Middleton Bainbridge
- Moira Emeline Guinness+2 b. 28 Jan 1902
- Rachel Ursula Isolde Guinness2 b. 15 Jul 1906
- Patricia Guinness+2 b. 20 Feb 1909, d. 7 Feb 2002
- Heather Seymour Guinness2 b. 14 Aug 1910, d. 24 Oct 1952
Robert Stagg Bainbridge1
Child of Robert Stagg Bainbridge
- Mary Middleton Bainbridge+2 d. 1 Aug 1954
Mary Middleton Bainbridge1 
From 20 November 1900, her married name became Guinness.
Children of Mary Middleton Bainbridge and Henry Seymour Guinness
- Moira Emeline Guinness+2 b. 28 Jan 1902
- Rachel Ursula Isolde Guinness2 b. 15 Jul 1906
- Patricia Guinness+2 b. 20 Feb 1909, d. 7 Feb 2002
- Heather Seymour Guinness2 b. 14 Aug 1910, d. 24 Oct 1952
Moira Emeline Guinness1
From 29 November 1923, her married name became Hills. She lived in 1976 at Penshurst Station, Kent, England.2
Children of Moira Emeline Guinness and Arthur Lafone Frank Hills
Arnold Frank Hills1
Child of Arnold Frank Hills
Arthur Lafone Frank Hills1
At White Court, Penshurst Station, Kent, England, Penshurst.3 He was appointed Officer, Order of the British Empire (O.B.E.)3 He lived Redleaf and Hammerfield.3
Children of Arthur Lafone Frank Hills and Moira Emeline Guinness
Rachel Ursula Isolde Guinness1
From 26 November 1931, her married name became de Mahé.
