I am looking for information on Catherine Mullarkey (Milarkey, Malarkey, several spellings on different documents) who married John O'Gara in Ireland. They emmigrated to Canada sometime @ 1840 give or take a couple of years. John had a sister Catherine who married James Elliott. Together they bought 100 acres of land to farm in 1847. They had a son John born in Ireland @1838, a daughter Bridget born in Ireland, in all they went to Canada with four children. They had a daughter Margaret who married a David Barrett and settled in Chicago on Artesian Ave. John & Catherine's son John married Sarah Donoghue, daughter of Matthew & Jane Donoghue. Help with this family would be appreciated. Want to know where in Ireland they came from. Thank you in advance for any help.