Cardinal O'Hara High School is a private, Catholic high school in Tonawanda Town, New York, within the Diocese of Buffalo. - Compare this map with the address of the school. Doing so shows the school is in Tonawanda Town, not Tonawanda City.

Notable alumni Donel Cathcart - Professional basketball player, played college basketball at Youngstown State University Gregory John Hartmayer, O.F.M. Conv., Archbishop of Atlanta Bill Scherrer - Former professional baseball relief pitcher from 1982-1988 Robin Schimminger - Politician from the state of New York

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