Born Giuseppe Tagliavia in Castelvetrano, Trapani, Mauri began his career as a film actor in low-budget films, occasionally even playing main roles.

[1] He debuted as a director co-directing with Andrea Bianchi the crime film La legge del mitra, in which he was also an actor.

[1] Mainly active between the 1960s and the first half of the 1970s, Mauri specialized in the Spaghetti Western genre, in which he was sometimes credited as Robert Johnson.

[1][2] He died in Rome, Italy on 18 February 2018, at the age of 94.

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