web sources say that this song is from a 1915 operetta "Alone at Last" by Franz Lehár https://www.ibdb.com/broadway-production/alone-at-last-7758 based on an Austrian book "Endlicht Allein" by Robert Bodansky and Dr. A. M. Willner.
Dr Munyon was a real person, a homeopath, I read.
Composer: Silvio Hein
Lyricists:Roy Atwell and Benj. Hapgood Burt
sheet music: https://digitalcommons.library.umaine.edu/mmb-vp/1466/