The Bishop's Transcripts of the register dates from 1562 through 1845. These are available on microfilm from the London Family History Centre.
The Lincolnshire FHS has published several marriage indexes and a burial index for the Westwold Deanery to make your search easier.
There is a booklet, apparently published in the 1920s, entitled "Many Thoughts from Many Minds," publisher unreported. Proceeds from the booklet were for Owersby Parish Church Restoration. Pat COOK provides these Lincolnshire names from the booklet.
The Wesleyans had a chapel here, built in 1856, and the Free Methodists built their's in 1881. The Wesleyan chapel was rebuilt in 1908. For information and assistance in researching this chapel, see our non-conformist religions page.