I couldn't find Bronson in the the BtN databases (surname or first name). I googled it and found the following
The name Bronson is of Middle English origin meaning “son of the dark one". Is this correct, does it really mean son of the dark one?
* Ellen * Astrid * Eira * August * Isidore * Emmanuel *
but she wants to be sure 'cause you know sometimes words have two meanings