Supplanter
A modern phonetic spelling of Jacqueline, which is the French feminine form of Jacques (James). It ultimately derives from the Hebrew name Jacob, referring to one who follows or replaces.
Less common today
Jackelyne isn't in the latest US Top 1000. It last peaked at #4,927 in 2000.
US births per 5-year period, 1990βpresent (SSA data).