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Leo Bernard William Bonn           1850-1929
Leo was born on 3 August 1850, the son of Bernard Heinrich Leo William Bonn of Franconia, Germany, and of Lugano, Switzerland and Elizabeth Maria Schiller Schuster at Villa Bonn, in Franconia, Germany.

Leo Bernard William Bonn "The Lion", first visited England in 1870, having Bavarian and Austrian relations, he disliked the Prussian treatment of his native Franconia, following Prince Bismarck's victory over Bavaria and Austria in 1866. The mercantile interests of the late medieval House of Bonn/Bon had originated in Venice and later continued in the commercial centres of Austria, Switzerland and the German Princely States. The family were still to retain several estates in Europe; near Salzburg, in Lugano, and in Franconia, where the jewel-like classical palace of Villa Bonn was kept by the family until about 1925.

The family came to England on a permanent basis in 1870 and from Leo's marriage to Ida-Delphina "Ida" Amalie Maria Elsa Bach about 1880, Leo Bonn's sons and their descendants were born and raised as English gentleman and subsequently sent to Eton, Oxford, or Cambridge, after which they took their places as officers in the Welsh Guards. They were also to marry into aristocratic English and Scottish families, and by 1925 were linked to all the Sovereigns of their adopted country from HM King Charles II, back to William The Conqueror.

Leo Bonn, the philanthropist, soon began purchasing great estates in England; he exchanged some of the Bonn's european estates and bought a number of important stately homes in differant parts of the Great Britain. These were as follows, the first two being aquired by him directly and the subsequent estates being later acquired by his son and two grandsons over the next 135 years (1870-2005);
Wotton, nr Aylesbury, Buckinghamshire,
Newbold Revel, nr Rugby, Warwickshire,
Common Hill, Cricklade, Gloucestershire,
Marsden Manor, Cricklade, Gloucestershire,
Oaklands, St Peter's, Jersey,
Belair House, St Saviour's, Jersey,
La Maison Marett, Trinity, Jersey,
La Maison du Coin, St Ouen, Jersey.
 
WottonHouse, nr Aylesbury, Buckinghamshire
Wotton House
Newbold Revel, nr Rugby, Warwickshire
Newbold Revel

Newbold Revel was the ancestral home of the distinguished Roman Catholic de Revel family. Hugh de Revel was a Grand Master of The Sovereign Military Order of Malta (1258-1277); the Order which Leo Bonn's grandson, Jurat Michael Bonn, was to receive a knighthood in, seventy years later. The Bonn's later ensured the care of Newbold Revel and it's stained glass windows, (commemorating the de Revel and Mallory families and the Arthurian legend's of 'La Morte d' Arthur'), by ensuring the purchase of the house, later, by the Roman Catholic Carmelite Order.
Ida-Delphina Amalie Maria Elsa Bach     1858-1945
Ida was born about 1858, in Germany.
I have identified the following children.
  Elizabetta "Elsie" Wilhelmina Leone Born abt 1881   London Married Frederick Charles Holford
Lily Helen Ida-Delphina Born abt 1883   London Died unmarried in 1962
Walter Basil Louis Born 27 Feb 1885   London Married Lena Theodora Davidson

Birth of Parents
Leo Bernard William Bonn b: abt 1850         Germany
son of Bernard Heinrich Leo William Bonn and Elizabeth Maria Schiller Schuster

Ida-Delphina "Ida" Amalie Maria Elsa Bach b: abt 1858         Germany

1871 Census RG10-100 3 April 1871 Mayfair, St George Hanover Square, London
40 Conduit Street
Leopold B. Bonn (Lodger)(u)
Julius P. Bonn (Lodger)(u)
Age 20
Age 32
Banker
Banker
Frankfort on Main
Frankfort on Main
  abt 1850
abt 1838

Marriage
abt 1880
Leo Bernard William Bonn
Ida-Delphina Amalie Maria Elsa Bach

1881 Census RG11-51 4 April 1881 Brompton, Kensington, London
7 Queen's Gate Gardens
Leo B. Bonn
Ida (Wife)
Plus 4 Servants
Age 30
Age 22
Merchant Germany
Germany
  abt 1850
abt 1858

Children
Elizabetta "Elsie" Wilhelmina Leone Bonn b: abt 1881               London
daughter of Leo Bernard William Bonn and Ida-Delphina Amalie Maria Elsa Bach
Lily Helen Ida-Delphina Bonn b: abt 1883               London       1883 1Q Kensington 1a 185
daughter of Leo Bernard William Bonn and Ida-Delphina Amalie Maria Elsa Bach
Walter Basil Louis Bonn b: 27 Feb 1885               London       1885 1Q Kensington 1a 189
son of Leo Bernard William Bonn and Ida-Delphina Amalie Maria Elsa Bach

1901 Census RG13-83 1 April 1901 Park Lane, London
22 Upper Brook Street
Leo Bonn
Ida (Wife)
Elsie
Lily
Plus 7 Servants
Age 50
Age 42
Age 19
Age 18
Banker Germany
Germany
London
London
  abt 1850
abt 1858
abt 1881
abt 1882

In 1911 Leo Bonn had hearing problems and was recommended to see a lady called Mary Hare who could teach him lip reading. He was so interested in the cause of deaf people that he visited Mr Storey who ran a school for deaf children in Stoke on Trent. Moved by Bonn's enthusiasm, Mr Storey agreed to begin a clearing house to help the interests of deaf people This was to be called the National Bureau for the Deaf and its first meeting took place in Mr Bonn's dining room at 22 Upper Brook Street on 9 June 1911. The organisation grew annually until the outbreak of World War I. By that time Bonn was President and Chairman, and aged 64 felt that someone younger should take over. The Bureau was renamed Royal Institute for the Deaf (RNID) in 1924.
It was well known that Leo Bonn had been offered a Baronetcy in the late Victorian era. At a time when many less distinguished or charitable accepted, Leo said that he did not regard that he had done anything to deserve such an honour, and that he had only founded the RNID because of his gratitude to the celebrated Miss Hare, who had taught him to lip-read, when he became stone deaf.
 
22 Upper Brook Street
June 1998, HRH The Duke of Edinburgh,
Patron to the RNID, unveiled the plaque.

22 Upper Brook Street, Park Lane, London

1911 Census RG14-16 3 April 1911 Cranfield, Bedfordshire
Cranfield Court   (8 Rooms)
Leo Bonn
Ida (Wife)
Lily (Dau)
Walter (Son)
Elsie Holford(Dau)
Frederick Holford (SonLaw)
James Holford (GrSon) Ford Laurence (Visitor)
Anna Douglas Laurence (Visitor)
Elisa Bonn (SisLaw)
Thomas Frederick Rawle (Visitor)
Plus 18 Servants
Age 60
Age 52
Age 28
Age 26
Age 29
Age 29
Age 2
Age 64
Age 35
Age 62
Age 26
Banker


Banker

Private Means

Peer
Spracter

Solicitor


Mayfair
Mayfair
Mayfair
Brighton
Mayfair
Simia
Chelsea
Germany
Germany
London
London
London
Sussex
London
India
London
Austria
London
3 Aug 1850
abt 1858
abt 1883
27 Feb 1885
abt 1881
abt 1881
abt 1808
abt 1846
abt 1875
abt 1848
abt 1884
Ida had Three children, and all are still living.

Death
Leo Bernard William Bonn Died 28 Nov 1929  at Newbold Revel, Rugby

The Times, Saturday, Nov 30, 1929   DEATHS
  BONN - On Thursday, November 28, 1929, very peacefully, at Newbold Revel, Rugby. Leo Bonn, in his 80th year.
LONDON   10 Feb 1930                         Probate
BONN, Leopold Bernhard - of 22 Upper Brook-street, Middlesex, died 28 November 1929, at Newbold Revel, Warwickshire, Probate London 10 February, to Ida Bonn, widow, Walter Basil Louis Bonn, retired officer H.M. army, sir Max Julius Bonn, knight, and Louis Fleischmann, banker.   Effects £220,779 0s. 6d.

The Times, Monday, Dec 2, 1929   OBITUARIES
MR. LEO BONN
  Mr. Leo Bonn, the founder of the National Bureau for Promoting the General Welfare of the Deaf (now the National Institute for the Deaf), died at his Warwickshire seat, Newbold Revel, near Rugby, on Thursday.
  Mr. Bonn was born in August 1850, the son of Mr. B. Bonn, of Frankfort-on-Main.   From 1886 to 1913 he was a director of the London and Liverpool Bank of Commerce, and for the last 13 years of that period he was also a director of the Union of London and Smith's
Bank.   For many years, Mr. Bonn lived at Wotton House, near Aylesbury, but some 18 years ago he settled in Warwickshire, having purchased the Newbold Revel estate.   There, he quickly became a popular figure and took a practical interest in agriculture and sport.   In his younger days he rode well and was an excellent shot.   He was a member of the Atherstone Hunt and one of it's largest subscribers.   Mr. Bonn leaves a widow, one son (Major W. B. Bonn, D.S.O., M.C.), and two daughters

Death
Ida-Delphina "Ida" Amalie Maria Elsa (Bach) Bonn Died 15 Apr 1945  at Brighton

The Times, Thursday, Apr 19, 1945   DEATHS
  BONN - On April 15, 1945, peacefully, at Brighton. Ida, wife of the late Leo Bonn, of 22, Upper Brook Street, London. Funeral service private at Monks Kirby, on Monday, April 23, at 2 p.m.
LLANDUDNO   1 Sep 1945                         Probate
BONN, Ida Amalie - of The Cottage, Charlton, near Malmesbury, Wiltshire, widow, died 15 April 1945, at Steyning Mansions Hotel, 3 and 4 Estern-Terrace, Kings Cliff, Brighton, Probate Llandudno 1 September, to Walter Basil Louis Bonn, major H.M. army and Lily Bonn, spinster.   Effects £10,426 1s. 2d.

SPECIAL THANKS  to the curator & archivist of the archives of the House of Bonn/Bon/Priuli-Bon.