Vampire off revenants—are common in vampire folklore. Garlic is a common example, a branch of wild rose and hawthorn plant are said to harm vampires, and in Europe, sprinkling mustard seeds on the roof of a house was said to keep them away. Other apotropaics include sacred items, for example a crucifix, rosary, or holy water. Vampires are said to be unable to walk on consecrated ground, such as that of churches or temples, or cross running water. Although not traditionally regarded as an apotropaic, mirrors have been used to ward off vampires when placed, facing outwards, on a door (in
Celtic cross Cross of the Scriptures, Clonmacnoise and those in Scotland at Iona and the Kildalton Cross, which may be the earliest to survive in good condition. Surviving, free-standing crosses are in Cornwall, including St Piran's cross at Perranporth, and Wales. Other stone crosses are found in the former Northumbria and Scotland, and further south in England, where they merge with the similar Anglo-Saxon cross making tradition, in the Ruthwell Cross for example. Most examples in Britain were destroyed during the Protestant Reformation. By about A.D. 1200 the initial wave of cross building came to an end in Ireland. Popular legend in