Wilson/Hewitt Family

I'm looking for any information on my 3x's great grandmother, Mary Anne Wilson.  She was born in 1837 in Fermanagh.  Her parents were Thomas and Jane Wilson.  From family stories, it's been told to me that Mary Ann was the youngest of 14 children, maybe more.  Mary Ann's death certificate has hand written comments that she was born in Magheravely in Fermanagh. 

Mary Ann and her mother embarked on a passage to Canada in about 1856.  Her mother died on the voyage and was buried at sea (family story).  Mary Ann settled in Toronto, Canada and in 1860 she married George Hewitt who was from County Armagh (he was born there in March of 1838.  I have no idea who his parents are)   They emigrated to the US in 1867 or so with their children. 

I've done a lot of research over many years on these two people, but they are my dead ends.  I can't find records of when either of them went from Ireland to Canada.  I have George's naturalization records which show that he was born in County Armagh, but nothing else.  I have US Census records, obituaries, and family pictures, but they are all from the US.  I would love to find Irish records or at least find out where exactly they were from in Ireland!  

Any help is greatly appreciated!  Thank you!