The Master Surname Index (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society does list those names; but there are these.
Arthur CHADWICK, - 28 Nov 1941 (Pte. 101 & 9 Batt. CEF)
buried in The Edmonton 7 ave Cemetery.
Leslie CHADWICK, 1894 - 23 Sep 1982
Sarah Ann CHADWICK, 1897 - 30 Jun 1979
both buried next to each other in the Red Deer cemetery.
And there are 8 other CHADWICK burials in the Cooking Lake Cemetery. Would they be related?
And you can find Chadwick Homesteads near Cooking Lake at Township 51 and Range 22 - W4 on this AGS site.
For further research please contact the AGS Research Services Committee of the Edmonton Branch,
http://abgensoc.ca/ Peter