Free man or free person
Carleena is a modern phonetic elaboration of Carla or Carlene, which are feminine derivatives of the Germanic name Charles. It ultimately stems from the word 'karl', referring to a free person who was not of noble birth but held legal rights.
Less common today
Carleena isn't in the latest US Top 1000. It last peaked at #11,835 in 1999.
US births per 5-year period, 1990βpresent (SSA data).