Fox family, Tyrone area

I am looking for any Fox family in Tyrone. My Grandmother was Margaret Fox. She married James Martin a tailor. They had 5 children, Francis Donal, Noel, Patrick Joseph (my father), Kevin and Maureen. I think there was another girl in there somewher who passed away at a young age. My Grandmother passed away in 1984 in Dublin. I know that before my aunt Maureen passed away she moved back to Tyrone. I don't know much about the Fox family but I do remember my Grandmother saying to me that I looked like Gusty Fox. I am keen to get any information possible to help wiyh my ancestry search. I know that my grandparents lived at10 Main Street, Fivemiletown and my dad and his siblings were all born there.