As only the 13thc. chancel (approx. 16 ft square) of this church survives, it has been described as the smallest church in the country. By tradition, the nave is said to have been destroyed during the Civil War. It survives merely as stumps of masonry in the grass. The 19thc. W wall carries a white weather-boarded bell turret.

This remote church originated as a chapelry of Alciston. It later belonged to Battle Abbey, but was transferred to Richard de la Wych (Saint Richard), Bishop of Chichester, in 1251. The nave is said to have been destroyed by fire by one of Cromwell's generals. The remainder of the church was repaired in 1806. In 1893 it was described as badly kept, but was connected with the neighbouring parish of Litlington and used for services fortnightly. It was restored in 1894, and became associated with Alfriston in 1927. Excavations were carried out in 1965-66. The font is said to have been found, partly broken, in a neighbouring garden (BN 1893, 265)

the medieval dedication of the church is not known, but there us reference to a Saint Sithe in a will of 1521.

The church was re-dedicated 2000.