The church is the Cornish standard of two aisles on a central vessel, but earlier than the usual date: the church was rededicated in 1336. There are additions of the 15thc. Only the font is Romanesque.

The town of Fowey was given to Richard Fitz-Turold, Lord of Cardinham, at the Conquest, and he later granted it, with its church, to the priory of Tywardreath, his own recent foundation. In the Domesday Book they figure as under the jurisdiction of this house.

The font's carving is of good quality. It is closely paralleled by Catacleuse stone fonts elsewhere in Cornwall at Ladock, Feock and St Mewan (this last a fragment), which must be products of the same workshop. Sedding's date of circa 1150 seems reasonable; he has also noted, the original square base now doing duty as a step in the porch; its sides being sculptured with, amongst other subjects, 'Jonah and the Whale'; the present writer could not find this.