The first reference to the name Modron may be in the poem "Pa Gur yv y Porthaur", in which "Mabon am Mydron", a "servant of Uthr Bendragon", is listed as one of King Arthur's warriors. A "Mabon am Melld" or "Mabon fab Mellt" (Mabon son of Lightning) also appears in "Pa Gur" and elsewhere; this may be a different character, but it is also possible that "Mellt" is Mabon's father (perhaps related to "Meldos", an epithet of the lightning god Loucetios).