Trees and wells have been places of wonder, wishes, offerings, and miracles in Britain since time immemorial. In many cases we can only speculate how long folk customs have been occurring. Northern and Central Europeans did not leave written records, apart from pictograms, sparse runic inscriptions or ogham carvings. Add to that, previous generations used materials that erode or decay. The point is that just because there is no record in no way implies something did not occur. But on the same token, it cannot very well be argued that it did occur unless there is hard evidence. This is the conundrum of the historian, but also of the folklorist who studies both lore and folk practices.