Annie Ketteringham married Joseph Richard Batten, 16 Sep 1912, York County
Edward Wm Ketteringham married Martha Rosina Francis Alice Sawyer, 30 Aug 1919 York County
Annie Batten, married Ernest Relf, 24 Dec 1916 York County. [I could not find a death for Joseph Richard Batten but she is listed as widow with parents Edward and Annie Maria Smith].
Annie Marie Ketteringham, 9 Aug 1931, b England, b 28 Jun 1872, father: Harry Smith, mother: Jennie Smith, Informant: Edward Ketteringham of 1 Humber Blvd, burial: Prospect Cemetery, died 9 Aug 1931 of ovarian cancer. There was surgery spring of 1931, no autopsy. cannot read the dr's name. Registration # 039166, York Tp, York County
Edward Arthur Ketteringham died Hospital for Sick Children Toronto, b British Columbia, 9 Apr 1927, 6m 6days, father: Edward Wm Ketteringham b England & Martha Sawyer, b England, burial: Prospect Cemetery, Informant: E W Ketteringham of 82 Caledonia Road, father, died of enlarged thymus since birth; acute intestinal intoxication/2days; diarrhoea. There was no surgery but there was an autopsy. Dr Wark. # 006514, Toronto, York County
Percy Ketteringham, d 14 Oct 1912, b Aug 28 1912, died at 163 Morrison St, mother: Annie Ketteringham, no father given, cause:premature birth, indigestion & malnutrition, Toronto, York County # 006139
Walter Gordon Ketteringham, died 2 Oct 1910, b 3 May 1910, 163 Morrison St, father: Edward M Ketteringham, b Kent England, mother: Annie M Smith b London England, died of convulsions/ indigestion & diarrhoea, #005319, Toronto, York County.
That is all I can find on Ancestry.ca re Ketteringhams.
Hope this helps.