What does Demyan mean?
Demyan is a rare given name for men but a very popular last name for both adults and children (#25687 out of 88799, Top 29%). (2000 U.S. Census)
Shown below is an analysis of the usage of Demyan and affiliated names. Damian (#102 the previous year), Damien (#249), Damon (#407), Damion and Dameon are the popular alternative forms of Demyan (#unlisted). Usage of this boy name reached its highest during 1970-1979 and is now much less, with the form Damion becoming less in vogue. Damon (#407), Damian (#102) and Damien (#249) are three of the more trendy names for newborns among these. (Top 1000 Baby Names Records, 2014)
A recommended similar baby name is Denman. Like Demyan, this name is not commonly used.