Cynes meadow or royal meadow
Kynzley is a modern American creative spelling of Kinsley. It derives from the Old English surname Kinsley, which combines 'cyne' (royal) and 'leah' (clearing or meadow).
Less common today
Kynzley isn't in the latest US Top 1000. It last peaked at #6,496 in 2018.
US births per 5-year period, 1990βpresent (SSA data).