Are there or were there any well known black magicians? And if so? Who were they? 

Sources 

Book:

Black Herman's secrets of magic-mystery and legerdemain

Websites

https://www.cabinetmagazine.org/issues/26/chireau.php

https://pininthetush.com/2017/02/19/black-magician-history-month/

https://theamericanblackstory.com/2020/02/07/d72020/

https://archive.org/details/black_hermans_secrets_of_magic_mystery_and_legerdermain/black_hermans_secrets_of_magic_mystery_and_legerdermain/page/36/mode/2up

https://travsd.wordpress.com/2012/02/06/black-hermann/

https://www.magictricks.com/black-herman.html

Youtube
https://youtube.com/@MoW484?si=ISvkheVk8xoKWmAu

Instagram
https://www.instagram.com/candicebriggi