Brave lake or hill and lake
A modern American invention likely created by combining the name Bray with the popular suffix -lynn. It draws from the Irish 'bray' meaning hill or the Germanic root for brave, paired with the Welsh 'llyn' meaning lake.
Less common today
Braylynn isn't in the latest US Top 1000. It last peaked at #1,767 in 2014.
US births per 5-year period, 1990βpresent (SSA data).