The Provincial Archive in Edmonton may be able to assist - They may hold some info re early deaths burials etc .
Govt of Alberta - Vital Statistics Registry Office - may be able to advise if there is information.
There should be a Registration of Death for Denis C. DENT - the cost aprox $40
Perhaps the family you are researching
1911 Census of Canada
Home / 1911 / Alberta / Strathcona / 42 Townships 47 / page 6
39 90 Dent Willam M Head M Dec 1872 38 born England
40 90 Dent Elizabeth F Wife M Sep 1874 36 born England
41 90 Dent L? M Son S Oct 1905 6 born Alberta
42 90 Dent Denis M Son S Sep 1907 4 born Alberta
43 90 Dent Gerald(?) M Son S Sep 1909 1 born Alberta
1916 Canada Census - Strathcona -
Strathcona - Sub district : Township 48 49 50
whole or fractional Frame 1 and 2 - West of 5th meridian
DENT, J. William - age 43 Elizabeth Age 41 - Laurence age 11, Denis age 9,
Gerald age 6, Margaret age 1.
MAHOOD: Alex age 69 - Elizabeth age 67 F. Robert age 34.
Contact the following - re previous mayors
http://www.athabasca.ca/content/mayors-message