Llantrisant (; Welsh for "parish of the three saints") is a hamlet in Anglesey, Wales. It is in the community of Tref Alaw, and was a community itself until 1984.
Its parish church is dedicated to Saints Afran, Ieuan, and Sanan.Church in Wales. "Ss Afran, Ieuan and Sanan (New Ch), Llantrisant". 2014. The parish's former church is now a protected building. Browne Willis and Sabine Baring-GouldBaring-Gould, Vol. I, p. 116. considered "Afran" to be a corruption of Afan, a saint of Ceredigion and Brecknockshire. (The 16th-century Peniarth MS 147 concurs, listing the church as dedicated to "Sannan and Afan and Evan".) St Afan was related to the Cuneddan dynasty of Gwynedd and was claimed as an ancestor by a 10th-century Ieuan martyred by Viking raiders.
In 1833 it was noted that copper ore had been found "in considerable quantities" near Meinir farm in the parish, but no mines had been opened.A Topographical Dictionary of Wales via Google Books
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External links photos of Llantrisant and surrounding area on geograph