Born in Alba, Cuneo, Bergonzelli graduated in Philosophy, then he started working as an actor with the stage name Siro Carme.
[1] A graduate in Philosophy, Sergio Bergonzelli made his debut as an actor in 1952, initially using the pseudonym Siro Carme.
This year marks the release of no less than four films:La storia del fornaretto di Venezia[3] directed by Giacinto Solito,a historical film;The Blind Woman of Sorrento (1953 film) [4] directed by Giacomo Gentilomo, director of this reinterpretation of the famous novel by writer Francesco Mastriani; and finally I, Hamlet,[5] a comedy by Giorgio Simonelli described by critics as “a rather feeble Shakespearean parody of dubious taste”[6] and finally the same year with Pietro Germi's The Bandit of Tacca Del Lupo.
In 1965 he was again director and screenwriter (participation in the screenplay by Bitto Albertini) with A Stranger in Sacramento,[18] a western described by critics as having no particular merit.
In 1966 he returned to the western genre with the making of El Cisco,[20] starring William Berger (actor), again Bergonzelli personally handled the screenplay.
In 1971 the drama film (with many erotic scenes) Io Cristiana student of scandals[26] is signed and scripted by Sergio, the following year he stars in the screenplay of a western that is found by critics to be monotonous, Up Your Hands Corpse!