Thanks so much for your response! Unfortunately I haven't been able to find Agnes with her middle name (Alexander). Also, I am not sure where my uncles are, my aunt passed (and I can't find her obit) and my mom was estranged from her mother, so she can't share much with me.
My grandfather, John Marshall was living in Belgium when he passed in 1970.
I have been able to go online for the old Toronto Star obits, but I have my doubts that she will be listed there since I think she was living in Kitchener/Waterloo. Do you know if the local paper from there would have old obits?
Thanks again! I appreciate your help!