Briony is a moderately popular girls' name in England & Wales, ranking #399 in 2001 with 79 recorded births. The name reached its all-time peak in 1997 with 101 births ranking #336. Since 1996, the popularity has decreased by 20.2%. In 2001, approximately 1 in every 3,392 girls born was named Briony. FALLING Recent data shows the name is currently falling.