The present church, consisting of chancel, nave, S aisle and W tower, is built of flint. Details such as window tracery date to the 14th and 15thc, with some Victorian restoration. The font is the is the only feature with Romanesque sculpture in the church and presumably survives from the building's earlier history, as perhaps represented by the N nave wall, pierced in the 14thc to receive windows with reticulated tracery and deep, undressed embrasures.

Winfarthing, in the Half-Hundred of Diss, was held as a manor by King Harold's freeman, Algar, before 1066. After the Conquest, Diss was held from the king by Godric. The manor possessed two hunting parks for the lord's use, and was thus unusually well endowed in having this facility.

The font appears to be Romanesque, recut in the 19thc. Presumably, it originally resembled the font at South Acre, Norfolk (Bond 1908, 294). According to Pevsner, the basin is 19thc.