Looking for information regarding Thomas Duggan Margaret Hanley of Manooth, Kildare, Ireland. They imigrated to USA sometime around 1840 -1850. One son, Michael Charles Duggan married Mary Ralles abt 1857. Their children were James D, Margaret E, Mary Ann, Paulina, Ellen Amelia, Allis(Alice), Thomas Malachi, Norah, Florence Roseline. Mary Ralles died abt 1877 and Michael Charles then married Erdina Frances Hayes in 1878 and had 8 more children; Rowena, Michael, Vincent, Robert, Benjamin Franklin, Susan Elizabeth (my gggrandmother), Geraldine, Agnes Ethel. Another son James Duggan became the Catholic Bishop of Chicago.
I'm looking for additional siblings for Michael Charles and James. I understand at least one brother stayed in Ireland. Any info would be greatly appreciated.

Thank you
Clifford Johnstun