Brantly is a distinctive boys' name in United States, ranking #8249 in 1997 with 6 recorded births. The name reached its all-time peak in 2013 with 103 births ranking #1540. Since 1996, the popularity has decreased by 45.5%. In 1997, approximately 1 in every 314,182 boys born was named Brantly. FALLING Recent data shows the name is currently falling.