In the current paper, it has been demonstrated through experimental results, historical citations and technical arguments that coherer (including cat's whisker) is the elusive memristor. The current paper draws parallel between the research pursued by scientists in the field of memristor and that in coherer, around a century back. The paper discusses various important milestones in the research of that era along with memristor research and how the scientific community missed to identify the memristor despite being very close to the discovery. The paper demonstrates that the first radios were made of memristor and provides novel applications of the same.