The Master Surname Index (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society does not lists a Aguilla Hannah.
Landonville was about 15 miles south of Elk Point on todays Alberta map.
Members of the AGS have transcribed and recorded all known cemeteries in the area. However some of these cemeteries have unknown burials.
For further research please contact the AGS Research Services Committee of the Edmonton Branch, http://abgensoc.ca/
The Edmonton Branchhttp://agsedm.edmonton.ab.ca