Jeff Cameron was born Giovanni Scarciofolo (IMDb says his real name was Goffredo). He died in 1985 - I have been informed by a reliable source that he died from "a disease", make of that what you will, but without any way to verify it this info should be treated as hearsay. Strangely no other information is known about him.
Jeff worked steadily as a stuntman from 1962-1967, first in peplums then moving into eurospies and spaghetti westerns, with occasional credits. 1968 saw him rise rapidly through the western credit lists (with several under his real name) and in 1969 he became a fully fledged lead actor, scoring 10 lead or featured roles over the next 4 years - though it must be said that none of these films were really any better than mediocre. Then in 1973, just as his career could have taken off internationally, he mysteriously vanished from the screen.
I think Jeff's latter filmography must be pretty complete, but there is a possibility that there may be a few undocumented appearances in peplums or eurospies still to be uncovered.
- Io Semiramide (uncredited) .... Darak
- Le sette fatiche di Alì Babà (uncredited) .... Strong man pushing wheel
- Maciste, il gladiatore più forte del mondo (uncredited) .... Gladiator x 2 + 3 other roles
- Ercole contro Moloch (uncredited) .... Gladiator
- Il Duca nero (uncredited) .... Soldier
- Maciste, l'eroe più grande del mondo (uncredited) .... Guard / Rebel
- Coriolano eroe senza patria (uncredited) .... Soldier
- Ercole contro i tiranni di Babilonia (uncredited) .... Soldier
- Ercole contro Roma (uncredited) .... Soldier
- Gli invincibili dieci gladiatori (credited) .... Gladiator
- Golia alla conquista di Bagdad (uncredited) .... role?
- Il gladiatore che sfidò l'impero (uncredited) .... Gladiator
- Il trionfo dei dieci gladiatori (credited) .... Fario
- La rivolta dei Barbari (uncredited) .... Barbarian soldier
- La rivolta dei sette (uncredited) .... Gladiator
- La vendetta dei gladiatori (uncredited) .... Gladiator
- Maciste nelle miniere di Re Salomone (uncredited) .... Guard / Fighter
- Adios gringo (uncredited) .... Citizen with rope to hang Brent
- Agente 3S3 passaporto per l'inferno (credited) .... Customer in nightclub
- I criminali della galassia (uncredited) .... Astronaut
- Il vendicatore dei Mayas (uncredited) .... One of Manur's men
- La decima vittima (uncredited) .... Gladiator
- Un dollaro bucato (uncredited) .... Soldier
- Sette contro tutti (credited) .... Rebel gladiator
- Arizona Colt (uncredited) .... Rancher
- Modesty Blaise (uncredited) .... Cell guard
- Password: Uccidete agente Gordon (uncredited) .... Thug
- Sugar Colt (credited as Giovanni Scarciofolo) .... Marky
- Un fiume di dollari (uncredited) .... Randall
- Zorro il ribelle (uncredited) .... Rebel
- 7 donne per i Mac Gregor (credited as Nino Scarciofolo) .... 1st bandit
- Da uomo a uomo (uncredited) .... Cavanaugh's Henchman
- I fantastici 3 Supermen (credited as Giovanni Scarciofolo) .... role?
- La più grande rapina del West (credited as Giovanni Scarciofolo) .... Mark
- Ray Master, l'inafferrabile (uncredited) .... O'Connor thug
- Strategic Command chiama Jo Walker (uncredited) .... Thug in bar
- Ed ora... raccomanda l'anima a Dio! (credited) .... Sanders
- Oggi a me... domani a te (credited) .... Moreno
- Prega Dio... e scavati la fossa! (credited) .... Cipriano
- Straniero... fatti il segno della croce! (credited) .... as Lucas Carson
- ... e vennero in quattro per uccidere Sartana! (credited) .... Sartana
- Passa Sartana... è l'ombra della tua morte (credited) .... Sartana
- Anche per Django le carogne hanno un prezzo (credited) .... Django
- Giù la testa... hombre! (credited) .... Macho Callagan
- I giardini del diavolo (credited) .... Lt. Bellings
- Per una bara piena di dollari (credited) .... George Hamilton aka Nevada Kid
- Quelle sporche anime dannate (credited) .... Tom Carter
- Al di là dell'odio... (credited) .... Cervo Volante
- La colt era il suo Dio (credited) .... Mike Jackson
- Un bounty killer a Trinità (credited) .... Alan Boyd
- La legge della camorra (credited) .... Mike Artusi
and one more!
I'm reasonably sure that he plays a pirate in Sansone contro il Corsaro Nero (1964), but with the available copies it's impossible to be certain or to get an image that isn't a blur.