John Wesley Hardin is part-folk hero, part-terrible human being, all deadliest Texas Outlaw.

Resources:

https://en.wikipedia.org/wiki/John_Wesley_Hardin

https://www.tshaonline.org/handbook/entries/hardin-john-wesley

You can read his biography for free here: https://www.google.com/books/edition/The_Life_of_John_Wesley_Hardin/jLM-AAAAYAAJ?hl=en&gbpv=1