The Celtic cross in the glebe at Luss, Loch Lomond. The upper part of the cross contains Christian symbols including the Dove of Peace, the grain of wheat, the fish symbol of early church, the chalice and the candle of hope. St Kessog was a Irish missionary of the Mid-Sixth Century. Son of the king of Cashel in Ireland. Kessog is claimed to have brought Christianity to the area around Luss and Scotland in 510AD.