Brantly is a distinctive boys' name in United States, ranking #2378 in 2011 with 53 recorded births. The name reached its all-time peak in 2013 with 103 births ranking #1540. Since 1996, the popularity has increased by 381.8%. In 2011, approximately 1 in every 35,830 boys born was named Brantly. FALLING Recent data shows the name is currently falling.