Brantly is a distinctive boys' name in United States, ranking #5279 in 2010 with 17 recorded births. The name reached its all-time peak in 2013 with 103 births ranking #1540. Since 1996, the popularity has increased by 54.5%. In 2010, approximately 1 in every 112,848 boys born was named Brantly. FALLING Recent data shows the name is currently falling.