Seneca County, Ohio Genealogy

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Online Records

Seneca County, Ohio
Boundary map of Seneca County, Ohio
Map of the U.S. highlighting Ohio
Location of Ohio in the U.S.
Seneca County, Ohio Courthouse.jpg
Address Seneca County Courthouse
103 S. Washington St.
Tiffin, Ohio 44883-2352
Seneca County Website
United States Gotoarrow.png Ohio Gotoarrow.png Seneca County

Historical Facts

Beginning dates for major county records

*For earlier dates, try... Church | Obituaries | Cemeteries
  • Parent Counties: Formed from Huron and Sandusky Counties in 1820 (1824).
  • County Seat: Tiffin
  • Neighboring Counties: Seneca County, Ohio Genealogy residents may also have records in [1]Sandusky (north) · Wyandot and Crawford (south) · Hancock (west) · Wood (northwest) · Huron (east)

Boundary Changes

See an interactive map of Seneca County boundary changes.

Record Loss


Bible Records


Business Records and Commerce



  Church Records



Reed Assumption Church is sometimes mentioned as being in Reedtown, but it is really in the nearby country west of Reedtown, which is called the Reed area. There was a church, school, and cemetery that were called Reed Assumption until the parish was closed in 2005. The cemetery is still called Reed Assumption. The church building is still there, but not the school. No other buildings are left, except the church and maybe the rectory. The frame school was torn down in the 1960s (when a new school was built to serve the area and the parishes of St. Sebastian, Reed Assumption, and Marywood-St. Michaels. It was a public school system known as Seneca-Huron because St. Sebastian (Bismark) was in Huron County and Assumption (Reed) and St. Michael's (Franks) were in Seneca County. The public school system was formed earlier (late 1940s?) for financial reasons, but all the teachers were Catholic nuns and they had Mass and religion classes every day. The convent house was moved a mile or so away and is used as a private home. It is a few miles west of Reedtown. Reedtown is on a state highway and is a very small unincorporated village. The only remaining business is Reedtown Tavern and maybe a car/machine repair shop. However, quite a few homes are still there.

A couple miles away in the country is a place called Frank's Corner. This area is also known as Marywood. In the earliest times, it was called Thompson (Township). The church and the cemetery there were called St. Michael's. The cemetery is still known by that name, but when the Reed and Marywood parishes were closed, along with Bismark St. Sebastian, a few years ago, the three were consolidated into a new parish now known as St. Gaspar del Bufalo (yes, that is the way it is spelled). That parish uses the 1800's Gothic style church that was formerly St. Michael's. Quite a few homes are still located there.

These settlements and parishes are adjacent to each other and separated by only a few miles. Both parishes, as well as the adjacent St. Sebastian parish, to the east in Bismark, were very "tightknit" German settlements and remain such today, with many of the same family names since the mid 1800s.

  • 1796–2004 Ohio, Diocese of Toledo, Catholic Parish Records, 1796-2004 at FamilySearch Historical Records – free. This collection includes images of parish registers recording the events of baptism, first communion, confirmation, marriage, and death in the Diocese of Toledo (Ohio), Roman Catholic Church. These records are accessed by browsing the images by county. In addition to traditional parish registers, this collection includes miscellaneous cemetery records, Books of the Elect, Professions of Faith, Sick Call registers, etc.

Court Records

Emigration and Immigration

Ethnic, Political, or Religious Groups




Land and Property



  • Civil War servicemen from Seneca County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are companies that were specifically formed in Seneca County.
– 8th Regiment, Ohio Infantry, Company A
– 123rd Regiment, Ohio Infantry
Company D
Company I
Company K

Naturalization and Citizenship





Public Records



Seneca County Courthouse
103 S Washington Street
Tiffin, OH 44883-2354
Phone: 419.447.0671

Probate Judge has birth, marriage, and probate, 
County Health Department has death records;
Clerk Court has divorce and court records from 1826;
County Recorder has land records[2]

Family History Centers

Seneca County Chapter Ohio Genealogical Society, P. O. Box 157, Tiffin, OH 44883-0841


Vital Records


Ohio Deaths, 1908-1953 – Free name indexes and images at FamilySearch. Records include such information as birth date of deceased; city, county, and state of death; name of spouse if married; names of parents; maiden name of mother; name of informant; if deceased was single, married, widowed or divorced; and occupation of deceased.

Web Sites

  • USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
  • Family History Library Catalog


Populated Places

“Marywood” – People often refer to a place called Marywood for a residence and/or marriages in Seneca County. There is no city called Marywood. In the “old times” when the local people spoke of Marywood, they were referring to the area around the three churches named Reed Assumption (which is in Reedtown); Saint Michael's (which has a Bellevue* address) and Saint Sebastian (which also has a Bellevue* address). Presently (2009), when people speak of Marywood, they generally are referring to Saint Michaels and/or a shrine called the Sorrowful Mother Shrine; you can learn more by going to the web at

The physical address of the Sorrowful Mother Shrine is: 
4106 State Route 269
Bellevue, Ohio 44811

  • Bellevue is a city that spans four counties: Erie, Huron, Sandusky, and Seneca

Neighboring Counties


  1. Wikipedia contributors, "Seneca County, Ohio" in Wikipedia: the Free Encyclopedia at,_Ohio (accessed 10 May 2012).
  2. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Seneca County, Ohio. Page 545 At various libraries (WorldCat); FHL Book 973 D27e 2002.