Belleek Classic Trinity Knot Mug Set of 2. This timeless Trinity Knot Tableware collection has been inspired by ancient Celtic Knot artwork. This simple trio of lines create patterns which are said to be a symbol of Love and can also represent the Godhead or Spirit, Mind and Soul. The symbol frequently appears in Ancient Irish manuscripts such as the Book of Kells, Gospel in Latin, which can be viewed in the Library at Trinity College, Dublin. Shop Now and Save 50% Off Belleek Classic Trinity Knot Mug Set of 2.