I am trying to locate the exact date Christopher Duffey came from Ireland.The earliest record is a mention of his family attending church in Saline County, MO,on December 22, 1846. (History of Saline County, Missouri) His obituary said that he came to the U.S.A. when he was 7 years old. I think that would be in 1845 or 1846. He had eight brothers and sisters. His father's name was Peter and his mother's name was Bridget. His brothers were James, Patrick, John, Thomas, and William Peter. His sisters were Margaret, Bridget and Anna.(He had additional sisters and a brother who were born in Missouri.)Any help with this would be greatly appreciated.