Patrick Carroll Born 1810 Bun County Cavan Ireland Looking for His Parents and Siblings

I am researching the family of Patrick Carroll, we do know that he was born in Bun, County Cavan, Ireland and immigrated to the US. He became a farmer in Kickapoo, Peoria Co., IL USA. He and his wife Hannah McGehan had 7 children in that area. I am currently looking for information on his parents and siblings. One of which may be a Thomas Carroll born October 1816, who also immigrated to the same area.