Thank you. I took a look at the Irsih Family Hitory ste. After looking at it, I really dont think there wouild be records there. The more I study the various documents, the more I am sure that Isaac and Mary were married when they Immigrated. I have a reference t Isaac immigrating from Belfast Irelands to Baltimore Marylaand. He arrived there in June 1817. He states in the 1830's that he was born about 1780 in County Armagh. That tends to track with the few census's between his immigration and his death in 1843. From his arrival in Baltimore in June 1817, he first is listed on the 1820 federal census in Indiana. Listed with him it looks like a son and a daughter, each under 10, and one older female, very likely his wife. Anoth records refereences that Mary was a very staunh member of the Chistian Church where they were at. It also mentions that Isaac was also a member. I really doubt that they would have chanmged from Roman Catholic to Christian Church when they immigrated. So if they were either Church of Ireland or Presbyterian in Ireland.
I reviewed the Irish naming convention, and it seems to indicate that possibly Isaac's father was named John. That is the name of their first born son anyway.
A quick look at my information leaves me not sure of Mary's maiden name. I really found nothing that has it. I will have to go digging to see where I got Carruthers at. I have tried looking at ship manifest's, but the U.S. did not require passenger list's before 1820. Some local cities did, but records that early not not regular. I don't think that the Irish kept record of outgoing passenger's so that point is gone. I think that until I hear back from a couple of libraries on the passenger list deal, I might be at a stone wall on this line.
I did find s 'possible' match on Isaac's father (possibly named John) at the PRONI site. But realkly nothing to tie them into the same family even. Thougfh there were fairly few results for the last name of Hart in Armagh County.