Hi, A little more information would be of help for others to be able to help you.
What research have you already done ?
WHAT time frame are you researching?
WHEN was your Grandmother Victorine MERCREDI -
dauther of Eusebe MERCREDI and Madeleine TOURANGEAU?
was your grandmother Borhn ?
WHERE - was she born.
When?Where was she married ?
Depending on the time frame - have you searched Canada Census - 1901 1906 [3 Prairie Provinces ] 1911 1916 Census for Canada.
Have you posted to Message Boards/ or Mail Lists for the loation where your Grandmother was born, married had a family etc.
Cheers & Good Luck