Cuz,Do not know the counties in Ohio, but have been in contact with two Calvert researchers in Ohio. lst: Jean (Mrs.Larry) Benson, 3100 Porter Rd, Atwater, Oh 44201 (330) 947-3717. Her computer is down. 2nd: John bricker, 2897 Neil Ave, Apt 382B, Columbus, Oh 43202 / email: BernieLennon@Aol.Com Try these folks, they may be able to help.Did publish a book "Tennessee-Texas Calvert Family, but this probably would not hlep you.There are other Calvert books available at most large libraries.Hope this helps. Art Hendon, 1909 s. Lakeshore Dt, Rockwall, Tx 75087 (972) 722-l993.