Finnley is a distinctive girls' name in United States, ranking #1201 in 2017 with 202 recorded births. The name reached its all-time peak in 2018 with 207 births ranking #1165. In 2017, approximately 1 in every 8,544 girls born was named Finnley. STABLE Recent data shows the name is currently stable.
Finnley is a modern spelling form of the Finley family and is generally understood through the same "fair warrior" background. It keeps the familiar sound while making the opening element more visibly like Finn.
This spelling is modern and style-led rather than traditional in its own right. It belongs to the broader trend of refreshing older Celtic names through spelling tweaks.