Bronwen was born to Ivory Henderson and Kristopher Blake. Ivory Henderson, who was the White Blade before she had a child. An assassin who was very lucrative and great at her job. Kristopher Blake, who had abandonment issues, but still married the mother of his child, long before she was conceived. Kristopher Blake, who she reminded him of his first love so much that, Unbeknownst his wife, he named her after.
Bronwen Blake, who was destined to follow in her parent's footsteps. Bronwen grew up to be very aware of her family's history. She saw how her mother was always sharp-tongued and fowl-languaged, but still the most graceful person you'd ever met. Bronwen takes a lot after her. She saw how her father was always so soft with her mother, but would not hesitate to hold somebody up by the throat while on business, as she and her sister Madeline had seen one unfortunate day. The day Bronwen confronted him,and became well aware of her family's business.
It was that day, after she confronted her father and he told her what she needed to know, that Bronwen decided to try and keep as much information away from her siblings as much as she can. Whether it be by lying or helping her parents hide. Bronwen's siblings, in her eyes, don't deserve to know something so horrible about her parents - She already feels like a bit of a failure for letting Maddy see it. She doesn't need Aaron to as well.
Both of them were Magical, which Bronwen found out one day while she was helping her mother, retired from work at the time and busy taking care of her children (Bronwen had two siblings - A younger brother named Aaron, and youngest sister named Madeline). Bronwen had been tasked with cleaning up, doing dishes and making sure the table was clean. All that. Suddenly, she turned her back for one moment, and looked back to see the dishes cleaning themselves. After initial shock, Bronwen went to tell Ivory and Kris.
Kris and Ivory had explained to all the children about when their magic would first show itself. Her father seemed fairly happy about the whole situation, and seemed even a bit happier when she had arrived for her first year at Hogwarts and was sorted into Slytherin. Bronwen had been followed not long after her siblings, but at that point, she already had her own group of friends. Kris had mentioned how some old family friends, the Matthews, were moving to England. So it looks like she'll have to fit them in too.
When she graduated, Bronwen applied to be an Auror. Since then, she had been quietly doing her job.