According to his daughter in his write up in Blade Magazine
https://blademag.com/blade-magazine-...ll-of-fame#mar
He was a sworn deputy in several states and an accomplished martial artist, holding a 5th degree black belt in Judo. He also trained in Jeet Kune Do, Kendo and various Philippine martial arts styles. However, his creative side is his legacy.
(NOT) Confirmed yet but working on it, date of death (17 Oct 1992)
https://www.legacy.com/search?cityId...tateUrl=oregon
I bought a AL MAR fighting knife in 1992 and still have it this is the model I have.