RCAHMW colour oblique aerial photograph of St Trillo's, Llandrillo-Yn-Endeirnion, from the north-west. Taken on 06 March 2006 by Toby Driver. Ref: AP_2006_0692
St Trillo's Church dates to at least the thirteenth century. It is situated within a curvilinear churchyard, with Llandrillo High Street forming its northern boundary. The churchyard is surrounded by roads on all sides, and is some 30m west of the river Ceidiog. The oldest gravestone is dated 1676. A holy well, Ffynnon Trillo (NPRN 32388) was formerly located some 400m north of the church. Unusually, the church is not built on an east-west axis, but is aligned thirty six degrees north of an east alignment. The current church, a Grade II listed building, was rebuilt in1885-1887, on the same footprint as its predecessor. A sixteenth century font was returned to the church from the vicarge garden in 1960. A thirteenth century consecration stone (NPRN 275899) is located within the church. It was removed from Blaen Cwm, Llandrillo in 1960, and its Latin inscription is now largely illegible.