Yeah, I've seen those - they aren't the Seeley's/Sealy's I'm looking for. For example, the oldest Seeley I've found in Joliet is John Joseph, born on Jan. 15, 1863 in Tipperary, who's wife was named Mary Walsh. They had at least 12 children, with 3 born in Ireland: Thomas in 1885, Richard Joseph in 1887, and Martin in 1888... And John Joseph had 3 brothers who also emigrated: William, Edward and Richard.
I've been able to find quite a few Seeley's in Joliet who are from Tipperary, but *very* few in Ireland itself, whether it's civil birth records, Griffith's Valuation, or Tithe Applotment Books.