Queen's meadow or flax meadow
Quinley is a modern English surname-style name. It likely derives from the Old English elements 'cwen' (queen) or 'quin' (flax) combined with 'leah' (meadow or clearing). It follows the popular trend of adding the 'ley' suffix to established prefixes.
US births per 5-year period, 1990–present (SSA data).