It's been 10 years since you posted, but I've been trying to find my Timothy Dacey who came from Ireland @1850 (my g-grandmother was born in LaSalle, Illinois in 1854. They lived in Chicago, at least until she was 6. I don't know what happened to her father Timothy Dacey or her mother, supposedly Ann Ryan, as her father left her in an orphanage in Chicago when she was 8; he enlisted in the Civil War, but almost immediately deserted! but he never went back for her which makes me think her mother had died. They appear on the 1860 census in Chicago.
Have you found where your Dacey comes from? Most Daceys come from Co. Cork, but I haven't been able to locate him there or find a birth place other than Ireland for him. Any help would be appreciated!
Kathy