The Multiverse theory was created in Dublin in 1952 by Erwin Schrodinger. He gave a lecture to a large group of citizens about his theory and he said that this might seem lunatic but listen to me. The citizens listened to his obscure theory that really did not make sense back then but in all honesty is still very unbelievable to this day without the correct knowledge of physics and astronomy. He said that, when his Nobel equations seemed to describe several different histories, these were "not alternatives, but all really happen simultaneously." this shows how much little we know of parallel universes since the theory from Erwin has not been changed drastically in any way. The word multiverse was used all the way back in 1895 when philosopher William Jones used the word Multiverse but it was not in context with the basis of the Multiverse theory.