Celtic cross
Since its revival in the 1850s, the Celtic cross has been used extensively as grave markers. Straying from medieval usage, when the symbol was typically used for a public monument. The Celtic cross now appears in various retail items. Both the Gaelic Athletic Association and the Northern Ireland national football team have used versions of the Celtic cross in their logos and advertising. The Church in Wales since 1954 have used a flag with a Celtic cross in the centre.