[3] St Trygarn's Church is thought to have been built in the 13th century; the former north doorway of the nave, which was reset in the south wall of the chancel, is the only part of the church which dates from that time.

[2][3] The collar beam roof of the chancel and the window settings were put into the church in the Late Medieval period.

[2][3] There are two 18th-century memorials: one in slate to Owen and Elen Morris and three of their descendants, and one in marble to Ellin and John Hughes and two members of their family.

[2] Samuel Lewis noted in 1849 that St Trygarn's Church and St Twrog's Church, Bodwrog, shared a priest, who resided in a house in Bodwrog built in 1838 by Jesus College, Oxford, to whom belonged the tithes of the parish.

[5] The church continues to serve the parish and provide services bilingually in English and Welsh.