My GGgrandmother was Mary Casey nee Kilker. She was born in Belmullet, County Mayo ca. 1819. She died in Chicago, IL in 1897. She married James Casey, unk when. They had 13 children. I, too, am trying find out more about the Kilkers. I have been in touch with Jery Kilker and I have not, as yet, been able to find out more about my GGgrandmother's Kilker family. I am continuing my search and will be posting any information I find to the message boards at Genealogy.com and at Ancetsry.com.