Hi, Not all Provinces in Canada - are overly difficult - depending on the time frame on is researching. The more information one has - the easier it will be to research.
Perhaps Contacting the Cemetery office - for Rocky Mountain House
http://www.rockymtnhouse.com/index.aspx?nid=271Some Cemetery Offices - and Funeral Homes can be very helpful - where possible - and if there is no great concern re privacy.
they will know if there had been a burial /s - at their site - May even be kind enough to check with surrounding Cemeteries and Funeral homes.
https://www.google.ca/webhp?source=search_app&gws_rd=ssl...Search Online White Pages Directory for the surname HERTZ - Rocky Mountain House Alberta
There are 41 Listings for the HERTZ surname - including an Adam HERTZ - no address given - but telephone number.
Public Library - for Rocky Mountain House - may hold newspapers / perhaps clippings - for Obituaries
https://www.google.ca/webhp?source=search_app&gws_rd=ssl...