The marriage was performed Aug 18, 1840, sworn to Aug 22, 1840, and filed Sep 15, 1840
"Ohio, County Marriages, 1790-1950," index and images, FamilySearch (https://www.familysearch.org): accessed 30 June 2011. citing Marriage Records, FHL microfilm 1,015,859; Van Wert County Courthouse, Van Wert, Ohio.
I do hereby certify that on the 18th day of August
1840, by virtue of a Licence from the Clerk of the Court
of Common Pleas of Van Wert County, Francis M
Hatfield and Polly Harter, were legally joined
in marriage by me a Justice of the Peace in and for
County - given under my hand this 22 day of August 1840
- Wm Read J.P.
Returned Sep 15, 1840 - R Gilliland, Clerk