Rowntree is an English surname derived from "Rowan tree". Published by Rowan Tree Press (1982). There is evidence that the rowan tree was held sacred to Ukko. This, together with the help of a rowan tree, allowed Thor to cross the river. The Rowan Tree Church is a Wiccan organization, legally incorporated in 1979. The Rowan Tree Church has an in-depth training program which leads to ordination.