Wellow is a small village in the Newark and Sherwood district of central Nottinghamshire, 11 miles NW of Newark. The church is in the village centre, and consists of a chancel, with S vestry, nave with S aisle and N porch and a tower in the W bay of the S aisle. It is constructed of coursed stone with ashlar dressings and was restored and the chancel replaced by Ewan Christian in 1878-79. Further restoration was carried out in 1968-69. The Romanesque features are the tower arch and a disused font.

According to the Domesday Survey Wellow was held by Ulf before the Conquest and by Gilbert de Ghent, Earl of Lincoln, in 1086. It was assessed at 2½ carucates. Gilbert gave Wellow to the Abbey of Rufford, which he founded.

The unusual shape of the font would seem to indicate that it was at one point set into a wall. According to the churchwarden, it was originally set into the S wall of the nave between the S arcade and the N tower arch where the modern font currently in use stands.