Broom-covered hill
Derived from the Old English words 'brom' (the broom shrub) and 'dun' (hill). It originally served as a surname for families living near such a landscape before becoming a popular first name. This specific spelling with a double 'n' is a modern variation of the traditional Brandon.
Less common today
Brandonn isn't in the latest US Top 1000. It last peaked at #5,496 in 1997.
US births per 5-year period, 1990βpresent (SSA data).