Romilly is a distinctive girls' name in England & Wales, ranking #551 in 2025 with 72 recorded births. The name reached its all-time peak in 2023 with 74 births ranking #528. Since 1996, the popularity has increased by 800.0%. In 2025, approximately 1 in every 3,518 girls born was named Romilly. STABLE Recent data shows the name is currently stable.