Prehistoric archaeology
It did not enter English as an archaeological term until 1836 in which it appeared in the "Foreign Quarterly Review" The three-age system , which just predates the coining of the term , was coined by Christian Jürgensen Thomsen in 1836 in an attempt to make sense of the chronology of prehistoric Europe . 
<triplet> three-age system <subj> Christian Jürgensen Thomsen <obj> discoverer or inventor