In todays society, the Celtic Cross is commonly found in burial sites. Since the revival in the 1850s, the Celtic cross has been used extensively as grave markers. This differs from its medieval usage as a public monument.
The Celtic Cross is in essence, a form of Christian crucifixion cross, but with the addition of a halo nimbus and in many cases, ornamental Celtic knots.
Popular legend in Ireland says that the Christian cross was introduced by Saint Patrick or possibly Saint Declan, though there are no examples from this early period. It has often been claimed that Patrick combined the symbol of Christianity with the sun cross to give pagan followers an idea of the importance of the cross. By linking it with the idea of the life-giving properties of the sun, these two ideas were linked to appeal to pagans. Other interpretations claim that placing the cross on top of the circle represents Christ's supremacy over the pagan sun.