Leitrim-Roscommon

I'm researching Patrick Rowley b1821. Known children Michael b1853, Anthony b1856 & Sarah b1865. Spouse possibly named Mary Kelly but this is not definate. They had to leave Ireland hurriedly, as the family story goes, circa 1856-1865, to Bradford, West Yorkshire, England. If anyone can find any clues on their time in Ireland (Sligo?Roscommon?Leitrim?), then I would be most grateful.
Thanks,
Jo Bolton
Nee Rowley