Donn

thumb|250px|Bull Rock, off the southwest coast of Ireland, is often identified with Teach Duinn (the House of Donn)

In Irish mythology, Donn ("the dark one", from ) is an ancestor of the Gaels and believed to be a god of the dead. Donn is said to dwell in Tech Duinn (the "house of Donn" or "house of the dark one"), where the souls of the dead gather. He may have originally been an aspect of the Dagda. Folklore about Donn survived into the modern era in parts of Ireland, in which he is said to be a phantom horseman riding a white horse.