Youthful or downy-bearded
A modern elaboration of Julia or Julianna, ultimately derived from the Roman family name Julius. It carries the connotation of youthfulness and is often associated with the Roman god Jupiter.
Less common today
Juliannie isn't in the latest US Top 1000. It last peaked at #8,752 in 2016.
US births per 5-year period, 1990βpresent (SSA data).