Do you have any more specifics, such as birth year, marriage year, name of spouse, year and location at time of death, cemetery name?
Douglas H G Slater
England and Wales Birth Registration Index, 1837-2008
birth registration: 1917 Bingham, Nottinghamshire, England
mother: Slater
Douglas G Slater
England and Wales Birth Registration Index, 1837-2008
birth registration: 1919 Derby, Derbyshire, England
mother: Slater
Douglas G Slater
England and Wales Marriage Registration Index, 1837-2005
marriage registration: 1941 Liverpool North, Lancashire, England
spouse: Born Or Blackwood
other: Florence Blackwood
Douglas G Slater
England and Wales Marriage Registration Index, 1837-2005
marriage registration: 1951 Coventry, Warwickshire, England
spouse: Daniels
other: Beryl G Daniels
Douglas G Slater
England and Wales Marriage Registration Index, 1837-2005
marriage registration: 1965 Southampton, Hampshire, England
spouse: Sealy
other: Carole A Sealy
Douglas G Slater
England and Wales Marriage Registration Index, 1837-2005
marriage registration: 1967 Nuneaton, Warwickshire, England
spouse: Harrison
other: Pauline Harrison
Douglas G Slater
England and Wales Marriage Registration Index, 1837-2005
marriage registration: 1979 Bournemouth, Dorset, England
spouse: Wheeler
other: Margaret A Wheeler
Douglas G Slatter
England and Wales Birth Registration Index, 1837-2008
birth registration: 1929 Dudley, Staffordshire, England
mother: Biggerstaff
Douglas G Slatter
Son
England and Wales Census, 1881
birth: 1881 Caldicot, Monmouthshire, England
residence: 1881 Caldicot, Monmouthshire, Wales
father: Oliver T Slatter
mother: Olive A Slatter
other: Alice Slatter, Agnes M Slatter, Robt E Anderson, Mary J Williams
William Douglas Slater
Find A Grave Index
birth: 3 December 1943
death: 1 December 1999
burial: 1999 Strathmore, Strathmore Census Division, Alberta, Canada
Douglas George Lawrence Slater
Find A Grave Index
death: 18 June 1951
burial: 1951 Winnipeg, Greater Winnipeg, Manitoba, Canada
Douglas Russell Slater
Find A Grave Index
birth: 11 January 1951
death: 15 January 1997
burial: 1997 Owen Sound, Grey, Ontario, Canada
Douglas Tory Slater
Find A Grave Index
birth: 1921
death: 2013
burial: Bible Hill, Colchester, Nova Scotia, Canada
John Douglas Slater
Find A Grave Index
birth: 1916
death: 17 October 1985
burial: 1985 McKenzie Corner, Carleton, New Brunswick, Canada