If you are able to look at Ancestry there is 1 public tree which shows that William Henry Coles b.23/7/1877 Paddington, London, son of William Samuel Tilke Coles and Eleanor Clifford Thomas who married 25/12/1872 St. Leonard, Shoreditch, London.   Eleanor died 1887 and WSTC remarried a Lucy Elizabeth Hurd Carnell in 1896 and he died in Sheffield in 1918.    He was an Engineer (although only a metal turner in 1881).
William Samuel Tilke Coles b.1851 Ottery St. Mary, Devon - son of a William Coles, Blacksmith (per marriage certificate on Ancestry).
1851 Census: Ottery St. Mary (ref.HO107 - 1864 - 160 - 25)
William Coles    33      Blacksmith      b. Ottery St. Mary, Devon
Mary Coles    33                               b. Zeal Monachorum(??) , Devon 
Fanny Coles   2                                b. Ottery St. Mary
Babe Coles   4 days                                ditto
George Henry Poke  17
Mary Carnall   60      Nurse
Think something must have happened between 1851 and 1861 as can't find family in 1861 but Fanny (above) 12 is with grandmother Elizabeth Coles as is a James aged 8.  Think the 'Babe' in 1851 is William ST. 
This should now have you on the right path.
Annette