Provisional details of Wilbert Raymond Pulver's family are as follows:
James PULVER b. c.1837 Ontario
|- Wilbert Jerome PULVER b. 12 Feb 1866 Ontario (Farm Labourer) m: Maria b. 23 Nov 1871 Ontario
   |- Wilbert Raymond PULVER b. 7 Dec 1890 Ontario d. 10 April 1917 Vimy Ridge, Pas de Calais, France
   |- Earle PULVER b. 23 Sep 1894 Ontario

References:
Mike Wingrove's Farmers' Directory 1891 - Welland County: Wainfleet Township
National Archives of Canada 1871 Census (Ontario Index)
National Archives of Canada 1901 Census
National Archives of Canada Soldiers of the First World War