Cincinnati Obituaries Archive (recent) includes the Cincinnati Enquirer (1/5/1999-Current), the Cincinnati Post (4/2/1990-Current) and 27 more Ohio newspapers (you can obtain copies of the obituaries online for a fee)
Order Ohio Birth or Death Certificates Online through Vitalchek (fees and restrictions apply) birth certificates are available from December 20, 1908 to present; death certificates, January 1, 1954 to present (for death certificates before 1954 see the Ohio Historical Society link near the top of this page)