Hi your Grandmother Marie Emilia DAIGNEAULT was born 1912 - daughter of Emilien DAIGNEAULT b aprox 1890 & Louisa CARDINAL.
Emilien was son of David DAIGNEAULT & Marie MORIN.
What research have you already done -
Do you know when /where your Grandmother and her family passed away - are buried.
Registration of Marriage / Death - / Long form Certificates - may prove helpful
Obituaries if published - may show names & locations of other family members at the time.
Have you Searched the Canada Census prior to your Grandmothers birth - and 1916 , 1921
for family members - *there may be variations to the DAIGNEAULT surname.
Alberta GenWeb Local History Book site online
http://www.rootsweb.ancestry.com/~canab/lhb/index.html