The Dedication of the Orthodox Church in Lampeter is to the Three Hierarchs or luminaries of the Church:
Basil the Great, Gregory the Theologian and John Chrysostom.
As great Bishops and teachers of the Orthodox Faith, who laboured to expound the Gospels and teachings of the Church they are honoured as men of extraordinary learning and discernment. As a University town, the tradition of learning continues and the inspiration and importance of the Three Hierarchs continue to guide us in the true faith.
They are commemorated on January 30th.
Troparion of the Three Great Hierarchs, Tone 1
Let all who love their words come together and honour with hymns the three luminaries of the light-creating Trinity: Basil the Great, Gregory the Theologian, and renowned John of golden speech, who have enlightened the world with the rays of their divine doctrines, and are mellifluous rivers of wisdom who have watered all creation with streams of divine knowledge; they ever intercede with the Trinity for us.
Kontakion of the Three Great Hierarchs, Tone 2
Thou hast taken the sacred and divinely inspired heralds, the crown of Thy teachers, O Lord, for the enjoyment of Thy blessings and for repose. For Thou hast accepted their sufferings and labours above every burnt offering, O Thou Who alone dost glorify Thy Saints.