Brantly is a distinctive boys' name in United States, ranking #1815 in 2014 with 82 recorded births. The name reached its all-time peak in 2013 with 103 births ranking #1540. Since 1996, the popularity has increased by 645.5%. In 2014, approximately 1 in every 23,420 boys born was named Brantly. FALLING Recent data shows the name is currently falling.