Two churches have stood in the churchyard at St Tyddyd's. The church dedicated to St Enclydwyn fell into ruin following the reformation and no trace is now apparent. The church dedicated to St Tyddyd was replaced by the present building in 1857 and contains fittings from its predecessor.

Associated with early Christian memorial stones in churchyard (NPRN 275728).

Painted features include the canopy over the altar, two panels of a sixteenth century triptych presented in 1713 for reredos, and eighteenth century and a now lost eigteenth century benefactions table.

Sources include:
RCAHMW 1956 Inventory of Caernarvonshire I (East), 168-9 No. 610.
Richard Suggett, Painted Temples: Wallpaintings and Rood-screens in Welsh Churches, 1200–1800, (RCAHMW 2021), pp. 111.

RCAHMW 2022