I had found this link on FamilySearch.org,
http://www.familysearch.org/eng/search/IGI/individual_record...
I'm not sure if it's Abram Barras and his folks? I don't know if the dates match up, but if it is him, it shows that he was NOT born overseas, and maybe the T. Barras could have been who your grandmother was named after? Not sure if it's them, but I thought I'd pass it on.