John L Hanna son of James Hanna 1722-1807

I've been able to trace my GGFather Oliver M Hanna to his father John L Hanna, Jr. and his father John L Hanna, Sr. born in Ulster Down Ireland abt 1762, emigrated to the US in 1796 to New Castle, DE, moved to Lewistown, PA 1798 and finally settled in Utica, Venango Co., PA 1802. I haven't been able to verify his parents as James Hanna 1722-1807 & Jane Stewart 1772-1851. Looking for help / suggestions. Look me up on Ancestry.com at Thomas Bruce Hanna Family Tree to see what I have.