Allen further comments that "Firsby's St Andrew's Church is an ancient crumbling edifice in a state of great decay. The single aisled church is thatched and in front of the porch is a bare pillar of stone that may have at one time held a sundial". Before the Reformation the church belonged to the Abbey at Bardney and was presented to the village by the Norman Lord of the Manor Sir Gilbert de Gaunt (1048-1094). The rectory was valued in 1834 at £12 0s 7d (£12.03). The original Norman church was demolished and a new church building erected in 1856 on the same site.