I'm helping my cousin research her line. Her great grandfather was a James Radigan b. @ 1846 in County Cork, Ireland. He immigrated with his family and arrived here in 1859. His father is Michael b. @ 1815 in Ireland and his mother is Ann b. @ 1820 in Ireland. There were some other siblings; a brother Patrick b. @ 1844, sisters Ellen, Kate, MaryAnn.
James married Anna Sheehan in 1866 and they eventually settled in Sangamon County, Illinois.
Would like to find out more on James and Anna's families.