Samuel Steward

Steward was mentored by Milwaukee-based master tattooist Amund Dietzel. Steward in turn mentored Cliff Ingram, aka Cliff Raven, and Don “Ed” Hardy, later known simply as Ed Hardy, encouraging both to practice the Japanese-style tattooing he himself most admired. After retiring from tattooing in 1970, Steward wrote a social history of American tattooing during the 1950s and '60s, which was ultimately published as Bad Boys and Tough Tattoos. Source: Wikipedia