God will increase
Josaline is a modern elaboration of Josephine, which is the French feminine form of Joseph. It combines the traditional Hebrew roots meaning 'Jehovah increases' with the popular '-line' suffix, often associated with names like Caroline or Madeline.
Less common today
Josaline isn't in the latest US Top 1000. It last peaked at #10,602 in 2007.
US births per 5-year period, 1990βpresent (SSA data).