I can tell you for sure the my Ferriter/Farritors from the Dingle Peninsula, Cty Kerry, Ireland also went to LaSalle Cty IL in about 1860 from Bradford Cty PA. This after the death of John Ferriter, the head of the family. I can also tell you the Ferriters knew the Maddens and knew them well. I even knew some as a child in Chicago (only lived there a while. They were also involved with the Costellos in Chicago. My part of the Ferriters (who now spelled it Farritor) went on to homestead in NE but some stayed in Streator, IL. I can tell you that Thomas Madden married Eileen Costello and their children were Thomas Jr., Maureen, billy, and Eileen Frances. Eileen Costello Madden was a sister of my Aunt Bernice Costello Farritor. Bernice was born in 1913. They all lived in Chicago when I knew them.
Audrey Annable Franklin