Fire or sword, and meadow
A modern American invention combining the Germanic element 'brand', meaning fire or sword, with the English suffix 'leigh', meaning a meadow or clearing. It follows the popular trend of adding traditional suffixes to established surnames to create a distinctive feminine given name.
Less common today
Brantleigh isn't in the latest US Top 1000. It last peaked at #6,441 in 2015.
US births per 5-year period, 1990βpresent (SSA data).