From a surname, an Anglicized form of Irish
Ó Proinntigh, itself derived from the given name
Proinnteach, probably from Irish
bronntach meaning "generous". The Brontë sisters — Charlotte, Emily, and Anne — were 19th-century English novelists. Their father changed the spelling of the family surname from
Brunty to
Brontë, possibly to make it coincide with Greek
βροντή meaning "thunder".