I am looking for information about John Gahagan, born abt 1818 in Pennsylvania, married Jane Lucas in 1848, Christian County, IL, died sometime between 1860 and 1870. John and Jane had 4 children in Pana, Christian, Illinois: Harriet A b. abt 1849; James b. 1852, married Emma Helm; Jennie, b. 1855 married James Darling; Thomas b. abt 1858. I have found many different guesses as to who John's parents were, but nothing with any evidence. Any help would be greatly appreciated.