I have found it interesting the a search of Irish surnames turns up little with the Ardiel spelling, However, Ardill turns up quite a few. There appear to be numerous Austrailians with the Ardill spelling, the ancestors of whom came from Tipperary. Also O'Ardill turns up every so often. I have also received a message referring to Ardillier. This suggests the Huguenot connection. Has anyone had any success tracking the alternate spellings. Any thoughts?