Black Canary (in)famously has multiple different origins even across multiple different media. Which one is your preferred version.
-Pre Crisis: Dinah Drake Lance who was the daughter of a cop raised to be one herself but chose to become a vigilante.
See here: http://blackcanaryfan.blogspot.com/2...nary-1978.html
-Post Crisis: Dinah Laurel Lance who was the daughter of Drake Lance and grew up with superhero uncles and aunts who inspired her to become a hero herself:
See here: http://blackcanaryfan.blogspot.com/2...90-secret.html
-New 52: where she is a street orphan taken in to a dojo where she was trained in martial arts.
See here: https://www.youtube.com/watch?v=tU_vn1yiUKM
-Or Arrowverse where you had Laurel Lance who was basically Rachel Dawes and Sara Lance who was in the same accident as Ollie and was trained by the League of Assassins?
Or would you prefer something else entirely?