Modern invented name, likely a combination of prefix Car- and -nesha
Carnesha is a modern American coinage, likely created by blending the popular prefix 'Car-' (as seen in Carla or Carmen) with the suffix '-nesha' (derived from names like Lakeisha or Tanesha). It emerged in the late 20th century as part of a trend of unique, rhythmic names within African American naming traditions. Because it is an invented name, it does not have a single traditional etymological root.
Less common today
Carnesha isn't in the latest US Top 1000. It last peaked at #6,076 in 1990.
US births per 5-year period, 1990βpresent (SSA data).