South Ormsby is a village in the East Lindsey district of Lincolnshire, in the Lincolnshire Wolds, 7 miles S of Louth and 7 miles NE of Horncastle. The Hall, built by James Paine in 1752, is surrounded by wooded parkland in whuich the remains of a shrunken medieval village have been found. The church is to the S of the park on top of a small rise. It consists of a Perpendicular W tower, nave with S aisle, N porch, and 14th c. chancel with a chapel to the S. The S aisle was rebuilt in 1871-2 by James Fowler. At the W end of the S aisle is a reset Romanesque doorway. The Church guide and information in the church states that this doorway came from the church of St. Andrew at nearby Calceby when this later church was dismantled in 1756. At this time the two parishes were merged into one.

In 1086, 3 carucates of land in South Ormsby were held by Hugh of Osbern from Earl Hugh of Chester. A further 2½ carucates were held by Herbert from his master Norman d'Arcy, and the Archbishop of York held half a carucate, which was sokeland of his manor of Tetford.

It is clear from the surface condition of the stone that the arch has been renewed and only the label is still good 12th c. stone work.