A follower of Christ
Kirston is a modern variant of Kirsten, which is the Scandinavian form of Christina. It ultimately derives from the Greek name Christos, meaning 'anointed one' or 'follower of Christ'. While less common than its counterparts, it retains a strong connection to its religious roots.
Less common today
Kirston isn't in the latest US Top 1000. It last peaked at #6,117 in 1993.
US births per 5-year period, 1990βpresent (SSA data).