Thank you very much for your message to Ireland Reaching Out. You would really need a few more details in order to progress the research further here. Although, there is a chance that someone in the County Cavan could be related to you and will hopefully get back to you. If you have any details such as a more exact location or dates, pleasse let me know and I will try to help you as best I can.
Perhaps you can check for mre details (such as immigration records) in Canada?
Thank you for your interest in Ireland Reaching Out!