Free man
Karlene is a feminine derivative of Karl or Charles. It shares the Germanic roots meaning 'free man,' originally referring to a person of free birth but not of noble rank.
Less common today
Karlene isn't in the latest US Top 1000. It last peaked at #2,734 in 1993.
Canadian writer and human rights activist
Australian politician and water security advocate
US births per 5-year period, 1990βpresent (SSA data).