Hi, What time frame?
Hi, If Irene Kovacs STEVENS lived in Ontario - have you also posted to the Ontario Message Board/s?

Did she live - marry - have her children in Alberta?
Are the Children still in Alberta - or did they go to Ontario with Irene?

If any of the family members are deceased - Have you searched for Obituaries - may show family members - and locations at that time. Perhaps can be followed up.

Perhaps posting to the Canada GenWeb Message Board. May be helpful -

Have you searched Online White Pages directory 411.ca
for the family ?
Cheers, Stella