Brantly is a distinctive boys' name in United States, ranking #2194 in 2015 with 62 recorded births. The name reached its all-time peak in 2013 with 103 births ranking #1540. Since 1996, the popularity has increased by 463.6%. In 2015, approximately 1 in every 30,907 boys born was named Brantly. FALLING Recent data shows the name is currently falling.