A divine gift or favor
A modern English word name derived from the Old English 'bletsian', meaning to consecrate or make holy. It is a creative variation of the more common name Blessing, often chosen to signify that the child is a precious gift.
Less common today
Blessin isn't in the latest US Top 1000. It last peaked at #3,980 in 2020.
US births per 5-year period, 1990βpresent (SSA data).