Peerage Record – 3730

     Sir John Denis Mahon was born on 8 November 1910.² He was the son of John FitzGerald Mahon and Lady Alice Evelyn Browne.¹ He died on 24 April 2011 at age 100.³
     Sir John Denis Mahon usually went by his middle name of Denis.¹ He was educated at Eton College, Windsor, Berkshire, England.¹ He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, with a Bachelor of Arts (B.A.)¹ He graduated from Christ Church, Oxford University, Oxford, Oxfordshire, England, with a Master of Arts (M.A.)¹ He wrote the book Studies in Seicento Art and Theory, published 1947.¹ He wrote the book Mostra dei Carracci Catalogo Critico dei Disegni, published 1956.¹ He was Trustee of the National Gallery between 1957 and 1964.¹ He wrote the book Pussiniana, published 1962.¹ He was appointed Fellow, British Academy (F.B.A.) in 1964.¹ He was an art historian.¹ He was Trustee of the National Gallery between 1966 and 1973.¹ He was appointed Commander, Order of the British Empire (C.B.E.) in 1967.¹ He wrote the book Catalogues of the Mostra del Guercino, published 1968.¹ He was appointed Knight in 1986.¹ He wrote the book The Drawings of Guercino in the Collections of HM The Queen at Windsor Castle, published 1989.¹ He was appointed Companion of Honour (C.H.) in 2003.¹

     Edward Mahon was born on 1 June 1862.¹ He was the son of Sir William Vesey Ross Mahon, 4th Bt. and Jane King.¹ He married Lilette Caroline Julia Rebbeck, daughter of James K. Rebbeck and Elizabeth l‘Abbadie, on 26 April 1911.¹ He died on 18 June 1937 at age 75.¹
     He graduated from Oxford University, Oxford, Oxfordshire, England, in 1884 with a Bachelor of Arts (B.A.)¹

     Lilette Caroline Julia Rebbeck was born on 20 March 1889.² She was the daughter of James K. Rebbeck and Elizabeth l‘Abbadie.² She married Edward Mahon, son of Sir William Vesey Ross Mahon, 4th Bt. and Jane King, on 26 April 1911.¹ She died on 16 April 1956 at age 67.^2,1
     Her married name became Mahon.

     James K. Rebbeck married Elizabeth l‘Abbadie.² He died on 1 September 1910.²
     He lived at Victoria, British Columbia, Canada^G.³

     Bryan Edward Mahon was born on 29 June 1913. He was the son of Edward Mahon and Lilette Caroline Julia Rebbeck.¹ He married Marolyn Miriam Smith, daughter of C. Laverne Smith, in 1960.¹ He died on 10 November 2005 at age 92.²

     Gilbert Mahon was born on 7 October 1865.² He was the son of Sir William Vesey Ross Mahon, 4th Bt. and Jane King.^2,1 He married Frances Blakeney, daughter of John Blakeney and Frances Maria Burke, on 19 March 1895.¹ He died on 2 January 1947 at age 81.¹

     Frances Blakeney was the daughter of John Blakeney and Frances Maria Burke.¹ She married Gilbert Mahon, son of Sir William Vesey Ross Mahon, 4th Bt. and Jane King, on 19 March 1895.¹ She died on 17 March 1931, without issue.¹
     From 19 March 1895, her married name became Mahon.¹

     John Blakeney was born in October 1826.² He was the son of John Henry Blakeney and Charlotte Mahon.² He married, firstly, Frances Maria Burke, daughter of James Hardiman Burke and Anne O’Hara.² He married, secondly, Johanna Isabella Blake, daughter of Henry Martyn Blake and Nichola Frances Charlotte ffrench, in 1873.² He died in 1901.²
     He retired from the military in 1849, with the rank of Lieutenant, late of the Royal Welch Fusiliers.² He held the office of High Sheriff in 1873.² He held the office of Deputy Lieutenant (D.L.)² He held the office of Justice of the Peace (J.P.)² He lived at Abbert, Monivea, County Galway, Ireland^G.²

     Mary Geraldine Mahon was born in 1859.² She was the daughter of Sir William Vesey Ross Mahon, 4th Bt. and Jane King.¹ She married Lt.-Gen. Dudley Charles FitzGerald-de Ros, 23rd Lord de Ros of Helmsley, son of General William Lennox Lascelles FitzGerald-de Ros, 22nd Lord de Ros of Helmsley and Lady Georgiana Lennox, on 14 January 1896 at London, England^G.¹ She died on 28 December 1921, without issue.¹
     From 14 January 1896, her married name became FitzGerald-de Ros.¹

     Alice Jane Mahon was born in 1861.¹ She was the daughter of Sir William Vesey Ross Mahon, 4th Bt. and Jane King.¹ She married Harry Polhill Chambers, son of George Wilton Chambers, on 8 January 1889.¹ She died on 25 September 1937, without issue.¹
     Her married name became Chambers.