I have a Cornelius Kane married to a Catherine Quinlan circa 1830s in County Kerry. She could be a sister to your Patrick Henry Quinlan. What other information do you have for the ancestors of Patrick Quinlan? Catherine was supposed to have died during the famine.
I also have a Patrick Quinlan in the 1860 Illiois Census--he was listed as 29 and born in Ireland. Living with him, are his wife,Dorsey Quinlan, 25, also born in Ireland, a baby Patrick Quinlan, Jr. age 1, and a H. Quinlan, age 31, also born in Ireland. C. Cain, 53, T. Cain, 18, and John Cain, 15, also are listed with the above Quinlans.
We have a lot of the same names, so we could be related in some way. Do you have any other information?