Theddingworth is a small village in the Harborough district of S Lecestershire, on the N bank of the River Welland that forms the border with Northamptonshire. The church is in the centre of the village, and is an ironstone rubble church with limestone dressings. It consists of a W tower and spire, nave with two aisles and low clerestory, chancel and two flanking chapels. The only Romanesque sculpture in the church is on the capitals of the N arcade; of similar date although plain are the arch leading to the N chapel, and the round font. The S arcade, though round-arched is 13thc. The church was restored by Sir George Gilbert Scott in 1858.

In the reign of Henry I Robert de Mealan, Earl of Leicester, granted his land in Theddingworth to his butler, Ralph Pincerna, who before 1150 gave the church there to Alcester Abbey (Warks). Probably this was a gift for Ralph's life only for his son Robert soon afterwards gave it to Leicester Abbey. Leicester ordained a vicarage and retained its advowson until the Dissolution. The ancient parish of Theddingworth included Hothorpe (Northants), which had a chapel in the 12thc.

Dating of N arcade; third quarter of 12thc.