The name reached its all-time peak in 2007 with 4 births ranking #3589. STABLE Recent data shows the name is currently stable.
Brynlee is a modern variant of Brinley. It fits a familiar pattern of names built from popular sounds, and its broader history links it to Brinley rather than to one ancient root of its own.
Behind the Name explains Brinley as a combination of Bryn and the popular ending lee, while also noting that it coincides with an English surname. Brynlee follows that modern naming pattern with an updated spelling.