I'm pretty sure the order was: Roman god; name of planet; alchemists' name for the element, which has persisted to the present day. See http://www.encyclopedia.

I'm pretty sure the order was: Roman god; name of planet; alchemists' name for the element, which has persisted to the present day. See http://www.encyclopedia.com/doc/1O27-mercury.html http://www.encyclopedia.com/doc/1O27-mercury.html for some evidence.