Trujo was a banjo brand founded in San Francisco by Harry George and Velma Truett in the 1920s. Harry George was a machinist but also a guitar player and the first Trujo instruments were modified Gibsons that he modified. Soon the Trujo instruments were made entirely by Gibson - but to the Trujo design with deep rims and a complicated tone ring system. There were also Trujo guitars.

Source Gryphon Strings Trujo banjo (15 April 2021)