St Mwrog's Church, Llanfwrog, Ruthin, is a double-aisled church with two chambers of equal size, west tower, and south porch. The arcade between the two portions is of three bays with pointed arches, and is of the Transitional Norman period. There is a thirteenth century window in the south wall. The doorway in the western face of the tower is Early English, although the lights of the tower have been modernised.  Recorded wall paintings comprise bilingual Benefaction boards.

Sources include:
RCAHMW Denbighs Inventory entry, 1914, pp. 380
Richard Suggett, Painted Temples: Wallpaintings and Rood-screens in Welsh Churches, 1200–1800, (RCAHMW 2021)

RCAHMW 2022