Gracious
Janecia is a modern American elaboration of Jane or Jan, which are derived from the Hebrew name Yochanan. It combines the classic root with the popular '-ecia' suffix to create a rhythmic, contemporary sound. Like its root names, it carries the traditional meaning of divine favor.
Less common today
Janecia isn't in the latest US Top 1000. It last peaked at #4,334 in 1998.
US births per 5-year period, 1990βpresent (SSA data).