Defiance County Genealogy
Defiance County genealogy records start in 1845 when the county was carved from Henry, Paulding, and Williams Counties. The county seat is Defiance, in the northwest corner of Ohio. You can search for birth, death, marriage, land, and probate records through the Defiance County Records Center, Probate Court, and local genealogical society. The Center for Archival Collections at Bowling Green State University also holds a large set of Defiance County records. This page covers the offices and resources you need for family history research in Defiance County.
Defiance County Overview
Defiance County Record Sources
The Defiance County Records Center is at 510 Court Street, Defiance, OH 43512. Call 419-782-8918 for questions. The Probate Court holds birth and death records, marriage records from 1845, and probate files. The Court of Common Pleas handles divorce records and civil or criminal case files. The Defiance County Recorder keeps land records from 1843, deeds, military discharges, and indigent burial records.
Land records in Defiance County go back two years before the county was even formed. That is because the Recorder's office inherited older records from the parent counties. Deeds, mortgages, and plats are all on file. These are useful for tracking family land ownership and figuring out where ancestors lived in the county. Military discharge papers filed with the Recorder can also help confirm service dates for veterans in your family tree.
Defiance County probate records from 1845 include wills, estate inventories, and guardianship papers. These files name heirs, list personal property, and sometimes describe family relationships in detail. If your ancestor died in Defiance County, the probate case may include an inventory of everything they owned. For records before 1845, check the parent counties of Henry, Paulding, and Williams, since those offices held the earlier files for this area. Under Title 37 of the Ohio Revised Code, most land and court records in Ohio are open to the public for research.
Defiance County Records at BGSU
The Center for Archival Collections at Bowling Green State University holds a large set of Defiance County government records. The collection covers probate court records from 1845 through June 1995, tombstone inscription indexes for county cemeteries, and county auditor records including tax abstracts from 1889 to 1898. Militia rolls from 1845, 1863 to 1864, and 1871 are also part of the collection.
The BGSU archives also hold county home death records from 1886 to 1995, which can fill gaps in regular vital records. Probate court items in the collection include birth records from 1866 to 1910, death records from 1867 to 1908, marriage records from 1845 to 1994, naturalization records from 1872 to 1906, and will records from 1902 to 1910. These records are available on microfilm and some have been indexed. Under Ohio Revised Code Chapter 3705, vital records must be filed with local registrars, but BGSU holds copies of many early Defiance County records that the county itself may not have readily on hand.
Note: BGSU's Center for Archival Collections is free to visit and specializes in northwest Ohio county records including Defiance County.
Defiance County Genealogical Society
The Defiance County Genealogical Society has published several useful indexes for family researchers. Their list includes an 1876 plat map index, 1870 census index, birth records from 1867 to 1908, death records covering 1884 to 1907, naturalizations, early deaths from 1867 to 1884, health department deaths from 1908 to 1996, marriages from 1885 to 1925, probate indexes from 1845 to 1995, Riverside Cemetery interments, and tombstone inscriptions from around the county.
The Defiance County Genealogical Society website shows their published indexes for local family research.
Check their publications list for indexes that cover the time period and record type you need.
These indexes save a lot of time. Instead of searching through original court ledgers page by page, you can look up a name in the index and go straight to the right volume and page number. The society is a chapter of the Ohio Genealogical Society, which has statewide resources and a research library in Bellville.
Genealogy Libraries Near Defiance County
The Defiance Public Library keeps a local history collection with materials on Defiance County history and genealogy. It is a good place to start if you are looking for published county histories, cemetery records, or local newspapers on microfilm. The library also provides access to online genealogy databases. Staff can help point you to the right shelf or microfilm reel based on the family name and time period you need. County histories published in the 1800s often list early settlers by name, which is helpful if your family was among the first to arrive in Defiance County. The library is free to use and open to the public.
For broader Ohio genealogy work, the Ohio Department of Health holds birth records from 1908 forward and death records from 1954 forward. Death records from 1908 to 1953 are at the Ohio History Connection Archives in Columbus. The FamilySearch website provides free access to many Ohio databases, including digitized county records. The Ohio History Connection Vital Records Guide is helpful for sorting out which office holds which record type by date.
Cities in Defiance County
Defiance County does not have cities large enough for a dedicated page on this site. The city of Defiance is the county seat and largest community. All residents use the county offices above for genealogy record searches.
Nearby Counties
These counties border Defiance County. Records for ancestors near the county line may be filed next door.