Renewed 2 bay C14 nave arcade with double chamfered arches, broach stops, octagonal columns and responds and moulded capitals.
In the north wall, set into a recess, is a single low C14 octagonal column with moulded capital.
Remains of a pedestal piscina and a circular font.
C17 altar rails with turned balusters.
C18 panelled pulpit.
Remaining furniture C19 with octagonal font with decorated quatrefoil panels.
Some C17 and C18 floor slabs.
The north aisle has 3 early C14 damaged reclining effigies of the Heriz family, 2 of cross legged Knights and the third of Lady Mathilda in wimpole with head under an ogee arch decorated with crockets and further decorated with stiff leaf and more naturalistic foliage.
On the north aisle north wall is a decorative ashlar memorial to those who died in the 1914-18 war.
The inscription is flanked by panels with decorative arches over, each containing a single figure and biblical quotation in coloured glass.
In the north east window of the north aisle are remains of C14 stained glass.
On the north nave wall is a hatchment and on the south nave wall a board detailing "Donations to the Poor of Gonalston", dated "May 6th 1828".