This is an on going project I started to find anyone named Bresnahan in various databases that lived in Ohio. Marriages list sources includes information from Ohio Counties, Ancestry, IGI, and Rootsweb.
-------Grooms----------------Brides
Cuyahoha Co.
Croroley, Patrick............Bresnon, Ellen 4/19/1855

Delaware Co.
Bresnahan, Thos.............Murphy, Mary 1/13/1862

Franklin Co.
Riley, John.....................Brosin, Margaret 11-29-1852
Shea, James...................Bresnan, Mary 2-18-1854
Brosnan, Michael............Sullivan, Ellen 8/26/1854
Conner, Michael.............Brosnan, Hanora 3/20/1855
Burns, James..................Brosnahan, Mary 8/01/1856
Clifford, William..............Bresnahan, Marry 9/24/1853
O'Neal, Dennis................Brosnahan, Hannah 2-02-1856
Brosnahan, John..............Fitzgerald, Joanna 11-11-1853
King, John.......................Brosnihi/Brosnahen, Eliza 3-08-1859
Harlehy, John...................Brosnin, Betsy 10-13-1852

Hamilton Co.
Bresnin, Daniel................Keily, Bridget 2/24/1857
Klebecker, Joseph...........Bresnan, Mary 1/09/1884
Bresnahan, Michael..........McCarty, Margaret 11/1858
Dillen, Phillip....................Bresnahan, Catharine 6/04/1859
Bresnan, Owen F.............Donohue, Helen 8/14/1860
Bresnen, Joseph...............McDonald, Elizabeth 5/01/1901
Bresnen, Stephen..............Legall, Julia 6/05/1901

Henry Co.
Lahuff, James....................Bresnahan, Mary 7/28/1859

Highland Co.
Mariarty, Patrick...............Bresnehan, Margaret 2/09/1863
Bresnahan, John................Casey, Mary 10/15/1883

Lucas Co.
Bresnahan, Roger Philip.....Norenberg, Gertrude E 11/29/1924

Ross Co.
Bresnan, Mark.................Landers, Ella
Bresnehan, Mark.............Landers\Sanders, Ella 5/22/1880
Bresnahan, Michael..........Fultz, Susan May 12/28/1881
Frey, Anthony..................Bresnahan, Katie M 6/12/1889
Haley, Michael.................Bresnahan, Johanna 9/28/1858
Cronan, John...................Bresnahan, Mary 6/10/1861
Driscoll, Daniel................Bresnehan, Elizabeth 1/31/1863
Gregory, John..................Bresnehan, Margaret 10/15/1861

Seneca Co.
Brosnan, John.................Kenny, Elizabeth 9/29/1859
Dorr, John......................Brosnahan, Catharine 4/17/1860
Scanlan, David................Brosnahan, Joanna 2/11/1858

Wood Co.
Bresnahan, Cornelius.......Hemminger, Florence c 1912
About 1891 of Jackson, Jackson, Michi