Follower of Christ
Karstyn is a modern Americanized spelling of Kirsten or Karsten. It ultimately derives from the Greek name Christianos, which refers to a follower of the Christian faith.
Less common today
Karstyn isn't in the latest US Top 1000. It last peaked at #9,852 in 2009.
US births per 5-year period, 1990βpresent (SSA data).