 Other inscriptional evidence for Arthur, including the Glastonbury cross, is tainted with the suggestion of forgery.Several historical figures have been proposed as the basis for Arthur, ranging from Lucius Artorius Castus, a Roman officer who served in Britain in the 2nd or 3rd century, to sub-Roman British rulers such as Riotamus, Ambrosius Aurelianus, Owain Ddantgwyn, and Athrwys ap Meurig.However, no convincing evidence for these identifications has emerged.