Lewis Vance Cummings, US author & adventurer?

Question

THis man was a cowpuncher, rode with Villa, wrote critical bio of Alex the Great, lived among headhunters, lectured to MYC Adv. Club, died in poverty.

Answer 1

The guy in the Dos Equis commercial pales by comparison. Cummings is well known as an author. I was unaware of his other accomplishments.