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c1863 Born in Kentish Town
Cycle dealer in Coventry from around 1900
1871 Living at 55 Prince of Wales Road, St Pancras: Edward O'Brien (age 28 born St. Clement Danes), a Law Stationer. With his wife Susan O'brien (age 28) and their children Catherine A. O'brien (age 6); Francis S. O'brien (age 5); Anne S. O'brien (age 3) and Susan S. O'brien (age 6 Months).
1881 Living at 23 Spencer's Road, Tottenham: Edward O. Brien (age 38 born London), a Solicitors G. Clerk. With his wife Susan Brien (age 38 born Ware, Herts.) and their children Francis S. Brien (age 14 born London), a Clerk; Ann S. Brien (age 13 born London); Susan S. Brien (age 10 born London); Edward S. Brien (age 8 born Tottenham); and James S. Brien (age 6 born Tottenham). One lodger. 
1891 Living as a lodger at 12 Mill Crescent, Coventry: Francis O'Brien (age 24 born Kentish Town), an Assistant Superintendent of Agent. In the home of Alecia K. Darwell. 
1900 September. Report of an accident. Francis O'Brien, cycle agent, of Springfield Terrace, Coventry, was pitched from his horse.
1901 Living at 3 Barr's Hill Terrace, Coventry: Francis Salmon O'Brien (age 34 born Kentish Town), a Cycle Agent and Employer. With his wife Ada (age 35 born Coventry) and their son Edgar (age 3 born Coventry). Also his niece Florence Johnson (age 18 born Coventry), Lady Clerk with Cycle Agency. One servant. 
1912 Listed as 'O'Brien, Frank, The Uplands, Rochester Road, Earlsdon'
1911 Living at The Uplands, Earlsdon, Coventry: Francis Salmon O'Brien (age 44 born Kentish Town, London), a Cycle Manufacturer and Employer. With his wife (married eighteen years with two children born and one living) Ada O'Brien (age 45 born Coventry) and their son Edgar O'Brien (age 13 born Coventry). Four servants. 
1913 Died at Coventry
1914 Donation to the Mayor's appeal of £21 from Mrs. Ada O'Brien and Mr. Edgar O'Brien.
Cycle shop of that name existed until the 1990s