The 21st letter of the Ogham tree alphabet, representing the letter K and meaning "sacred grove."
Rather than a single tree, Koad represents the sacred groves that were so venerated by the Celts....

Koad represents hidden knowledge being revealed, everything falling into place so that mysteries are suddenly understood.



Became "unlucky" around the Middle Ages. The probable cause being that Judas, the betrayer of Jesus, was the "13th" apostle at the Last Supper.

In antiquity, even before Christianity, twelve was a perfect, complete number, so thirteen indicated the beginning of a new cycle; from this it became a symbol of death. To death was added the idea of renewal - the end of one cycle and the beginning of another.