From the fortress meadow and grace
A compound name combining Kimberly, which refers to Cyneburga's meadow or a royal fortress meadow, and Ann, meaning grace or favor. It represents a mid-20th-century American trend of creating double-barreled names to honor multiple family members.
Less common today
Kimberlyann isn't in the latest US Top 1000. It last peaked at #6,368 in 1991.
US births per 5-year period, 1990βpresent (SSA data).