In reply to:
Brian Wray 10/01/07
IGI shows Louisa Maude Cannon b. 9 Oct 1861 and Harrietta Violet Katherine Cannon b. 7 Oct 1864.
freebmd.rootsweb.com shows the death of Robert Lionel Cannon in 1900, of Osborne Barwell Cannon in 1901, and of Harriet St. George Cannon in 1907.
http://www.hmcourts-service.gov.uk/cms/1226.htmhttp://www.hmcourts-service.gov.uk/cms/1226.htm - you could try getting the will/probate of Osborne or Harriet.
Have you tried www.fibis.org?
Death notice in the Times:
The Times, Wednesday, Jan 30, 1901; pg. 1; Issue 36365; col A
On the 28th Inst, at his residence, 89 Church-road, Richmond, Surrey, Osborne Barwell Cannon, Major late 97th regiment, second son of the late Major William Cannon, of Dumfries, aged 72, deeply regretted.