The Master Surname Database (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society lists these names;
Frank LOOS, 1870 - 1943
Edla LOOS, 1877 - 1996
Walter A LOOS, 1898 - 1972
all burials in the Waterhole cemetery at Fairview.
For further research please contact the Research Committee of the Edmonton Branch.
http://abgensoc.ca/The Edmonton Branch
http://www.agsedm.edmonton.ab.ca/ Peter