Likely a modern blend of Ke- and Risha
Kerisha is a modern American invention, likely created by combining the popular prefix 'Ke-' with the name Risha. Risha itself can have roots in Sanskrit meaning 'saintly' or as a diminutive of names like Patricia or Felicia. In a Western context, it is often chosen for its melodic sound rather than a singular historical lineage.
Less common today
Kerisha isn't in the latest US Top 1000. It last peaked at #6,667 in 1990.
US births per 5-year period, 1990βpresent (SSA data).