I searched the IFHF's online databse at ROOTSIRELAND.IE. It contains abt 19 million B/M/D records for MOST Irish counties.
For Jeremiah Healey B 1809 +/- 9 yrs, somewhere in Ireland, I found 8 records. However none have a father forenamed T(homas). Many records at this early date failed to record the parent's names. You will have to decide which, if any, is for your ancestor.