Hi,

In the 1881 Census:

Charles Banks Nelson, 34, Isle of Man, Married, Advocate: Boarder at 6 &7 Broad Walk, Buxton, Derby, England

In the same boarding house:
George Alfred Ring, 89, Douglas,Isle of Man, Advocate
Broad Walk was a row of boarding houses.

Can't find him in the 1901 Census - but did find 2 Berkeley's:

Berkeley Nelson, 17, b. Ramsey, IOM, Lancaster, Blackpool, Electrician's apprentice
Berkeley Nelson, 32, b. London, Tottenham, London, Islington, Incorporated Accountant.

A synopsis of the Dumbell Affair from Frances' site:
http://www.isle-of-man.com/manxnotebook/exans/evt_1901.htm

Feb , 1900
3 - BLACK SATURDAY. Failure of Dumbell's Bank announced. Awful consternation throughout the Island Hundreds of depositors and shareholders ruined.
Parr's Bank stated to have assumed liabilities and assets of failed concern. Par, 1900
9 - Meeting of Dumbell's shareholders in Douglas: Mr J. A. Mylrea says mea culpa: Announcement of Parr's withdrawal from their agreement to assume liabilities and assets of Dumbell's causes consternation: Messrs J A. Mylrea and T. H. P. Mylechreest appointed liquidators. Later in year Mr Mylrea resigned, and Mr W. H. Walker appointed in his place" and yet later Mr Mylechreest resigned, and Mr Walker confirmed as sole liquidator. Parr's gave £40,000 for goodwill of Dumbell's business, and £15,000 for bank buildings.
10 - Mr E. T. Christian, H. K., one of members for Glenfaba, and agent for Dumbell's at Peel, resigns from the House of Keys.
12 - An unfounded rumour causes a great run on the Isle of Man Banking Company, Ltd.: Disgraceful panic.
12 - Death of Sir Alured Dumbell, Clerk of the Rolls.
16 - Death of Mr Robert Archer, a noted Manx business-man and philanthropist.
17 - Death of Mr H. T. Graves, J.P., of Peel.
17 - Resignation from the House of Keys of Mr F. G. Callow, one of members for Middle - another result of the Bank smash.
31 - Mr Thomas Clague, member for Peel in House of Keys, goes bankrupt: Overdraft at Dumbell's nearly £22,000.
31 - Resignation of Mr Thomas Clague, HK., from House of Keys.

JUNE, 1900

14 - Magisterial proceedings against Charles Banks Nelson (director), John Shimmon (manager), Joseph Drake Rogers (auditor), William Aldred (auditor), and Harold Vincent Aldred (auditor), officials of Dumbell's Bank, on charges of fraud. Prisoners committed for trial, and bail refused by Mr Samuel Harris, High-Bailiff of Douglas.
23 - Dumbell's failure: First dividend of 3s 4d in £ to creditors.
23 - Bank prisoners released on bail by Staff of Government.
23 - Deemster S. Stevenson Moore, of London, appointed Northern Deemster.

JULY, 1900

14 - Alexander Bruce, for 22 years general, manager of Dumbell's Banking Company, Limited, died today in Douglas. Criminal proceedings in connection with the failure of Dumbell's had been instituted against him, but were withdrawn in con-sequence of his illness
17-21 - Court of Criminal Inquiry: Bank prisoners committed for trial before Court of General Gaol Delivery: Bail allowed.

NOVEMBER, 1900

5-19 - Trial of Charles Banks Nelson (53), John Shimmon (55), Joseph - Drake Rogers (58). William Aldred (76), and Harold Vincent Aldred (33), before Court of General Gaol Delivery of Isle of Man upon charges of fraud in regard to management of Dumbell's Bank : Tynwald Chamber at Douglas specially fitted as Court for occasion: Judges - the Lieut.-Governor (Lord Henniker), Acting First Deemster Shee and Second Deemster Moore : Counsel, The Attorney-General (Mr G. A. Ring), Mr F. Browne and Mr R. Farrant (for Crown); Mr J. J. Creer (for Nelson and Rogers), Mr C. W. Coole (for Shimmon), and Mr C. Hughes-Games for the Aldreds : Trial of all prisoners upon charge of issuing false balance sheets lasted nine days: Jury (Mr T. C. Kermode, of Peel, foreman) after one hour's deliberation found all prisoners guilty, and recommended H. V. Aldred to mercy: Sentences postponed: Trial of Nelson and Shimmon upon charge of fraudulently appropriating to their own use money of the bank followed, and lasted four days : Jury (Mr Pilcher G. Ralfe, Castletown, foreman) ;were absent for seven hours and did not agree: Accordingly, they were locked up in Talbot hotel over Sunday, and on Monday morning returned into court with a verdict of guilty against both prisoners: Sentences: Nelson and Shimmon, five years penal servitude for fraudulent appropriation, and three years penal servitude for publication of false balance sheets, the sentences to be concurrent; Rogers, eighteen calendar months' Imprisonment, with hard labour; William Aldred, twelve calendar months' imprisonment, with hard labour; Harold V. Aldred, six calendar months' imprisonment, with hard labour: Great public excitement during trial.

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