Son of Carr
Karsin is a modern phonetic spelling variant of Carson. It originates from a Scottish and English surname meaning 'son of Carr' or 'son of the marsh-dwellers'.
Less common today
Karsin isn't in the latest US Top 1000. It last peaked at #4,524 in 2014.
US births per 5-year period, 1990βpresent (SSA data).