Mahon Family of Woodley Park House
Sir William Henry Mahon married Hon Edith Augusta Dillon
born 31 Dec 1856 25 Jan 1905 born 9 Aug 1878
Galway Galway Galway
died 13 Aug 1926 died 24 Apr 1964
The Mahon family were first recorded in east Galway in the late seventeenth century and the
family claim descent from the McMahons of Dal Cais, hereditary kinsmen of the O’Briens. The
dispossessions of the late seventeenth century saw the family acquire land in east Galway.
William Henry Mahon was born on 31 Dec 1856 and was the son of Sir William Vesey Ross Mahon
and Jane King. He became the 5th Baronet in 1893. He was High Sheriff of County Galway, 1898,
and JP, Lieutenant Colonel, 4th West Yorkshire Rifles and served in South Africa.
He gained the rank of Major in the 4th Battalion, West Yorkshire Regiment. He was a JP for the West
Riding, Yorkshire and Co Galway and DL for the of County Galway. He was awarded the DSO
and fought in the Boer War between 1900 and 1902. He married Hon Edith August Dillon, second
daughter of Lord and Lady Clonbrock on 25 Jan 1905 at Asascragh, Co Galway and held over 1200
acres of untenanted land in the Ahascragh area. He died on 13 Aug 1926 and left nearly 4K in
personal estate in the Free State and property in England of nearly 12K. Edith died on 24 Apr 1964
at age 85.
1 Ursula Augusta Jane Mahon born 17 Jan 1906 married Hon Arthur Marcus Lowther Crofton
as his second wife on 17 Jul 1929 and had issue.
2 William Gerald Ross Mahon born 2 Sep 1909 Merrion Square died 31 Aug 1910.
3 Sir George Edward John Mahon (twin) born on 22 June 1911 at 63 Merrion Square. He was
educated at Wixenford College, Wokingham and at Eton College in Berkshire. He succeeded as
the 6th Baronet Mahon, of Castlegar, County Galway on 13 Aug 1926. He graduated BA from
Trinity College, Cambridge in 1933. He was British Consul in Berlin during the Weimar Republic.
He married Audrey Evelyn Jagger, daughter of Walter Jagger, Surgeon on 20 Sep 1938 and they
resided at Woodley Park House. Audrey aged 41 died by her own hand on 4 Apr 1957 at 21
Wellington Road, Dublin. George was living at Castle House, Dundrum at the time but moved
to Castleknock Lodge after her death. He was on the board of The Royal Exchange Assurance
Company in 1961 and president of the Institute of Bankers. He secondly married Suzanne
Donnellan, daughter of Thomas Donnellan. George was a banker and a director of Guinness
and Mahon until his resignation in January 1971.
4 Mary Edith Georgiana Mahon (twin) born 22 Jun 1911 died 17 Nov 1918.
5 Luke Bryan Arthur Dillon-Mahon born 12 Apr 1917 at 28 Lower Fitzwilliam Street. He was
educated at Eton College, Berkshire and graduated Trinity College, Cambridge. He married
Audrey Doreen Vipond on 28 May 1949. In 1966 his name was legally changed to Luke Bryan
Arthur Dillon-Mahon by Deed Poll.
© June Bow & Karen Poff – April 2017
Return to Woodley House page
Sir William Henry Mahon married Hon Edith Augusta Dillon
born 31 Dec 1856 25 Jan 1905 born 9 Aug 1878
Galway Galway Galway
died 13 Aug 1926 died 24 Apr 1964
The Mahon family were first recorded in east Galway in the late seventeenth century and the
family claim descent from the McMahons of Dal Cais, hereditary kinsmen of the O’Briens. The
dispossessions of the late seventeenth century saw the family acquire land in east Galway.
William Henry Mahon was born on 31 Dec 1856 and was the son of Sir William Vesey Ross Mahon
and Jane King. He became the 5th Baronet in 1893. He was High Sheriff of County Galway, 1898,
and JP, Lieutenant Colonel, 4th West Yorkshire Rifles and served in South Africa.
He gained the rank of Major in the 4th Battalion, West Yorkshire Regiment. He was a JP for the West
Riding, Yorkshire and Co Galway and DL for the of County Galway. He was awarded the DSO
and fought in the Boer War between 1900 and 1902. He married Hon Edith August Dillon, second
daughter of Lord and Lady Clonbrock on 25 Jan 1905 at Asascragh, Co Galway and held over 1200
acres of untenanted land in the Ahascragh area. He died on 13 Aug 1926 and left nearly 4K in
personal estate in the Free State and property in England of nearly 12K. Edith died on 24 Apr 1964
at age 85.
1 Ursula Augusta Jane Mahon born 17 Jan 1906 married Hon Arthur Marcus Lowther Crofton
as his second wife on 17 Jul 1929 and had issue.
2 William Gerald Ross Mahon born 2 Sep 1909 Merrion Square died 31 Aug 1910.
3 Sir George Edward John Mahon (twin) born on 22 June 1911 at 63 Merrion Square. He was
educated at Wixenford College, Wokingham and at Eton College in Berkshire. He succeeded as
the 6th Baronet Mahon, of Castlegar, County Galway on 13 Aug 1926. He graduated BA from
Trinity College, Cambridge in 1933. He was British Consul in Berlin during the Weimar Republic.
He married Audrey Evelyn Jagger, daughter of Walter Jagger, Surgeon on 20 Sep 1938 and they
resided at Woodley Park House. Audrey aged 41 died by her own hand on 4 Apr 1957 at 21
Wellington Road, Dublin. George was living at Castle House, Dundrum at the time but moved
to Castleknock Lodge after her death. He was on the board of The Royal Exchange Assurance
Company in 1961 and president of the Institute of Bankers. He secondly married Suzanne
Donnellan, daughter of Thomas Donnellan. George was a banker and a director of Guinness
and Mahon until his resignation in January 1971.
4 Mary Edith Georgiana Mahon (twin) born 22 Jun 1911 died 17 Nov 1918.
5 Luke Bryan Arthur Dillon-Mahon born 12 Apr 1917 at 28 Lower Fitzwilliam Street. He was
educated at Eton College, Berkshire and graduated Trinity College, Cambridge. He married
Audrey Doreen Vipond on 28 May 1949. In 1966 his name was legally changed to Luke Bryan
Arthur Dillon-Mahon by Deed Poll.
© June Bow & Karen Poff – April 2017
Return to Woodley House page