This curious very late spaghetti western really goes out on a conceptual limb, sending Tony Anthony's rascally Wild West "Stranger" across the Atlantic with a Spanish princess. In Europe he somehow gets mixed up with both Elizabethan-era Spaniards and Viking-style "barbarians," while another character seems to parody Shakespeare's Richard III.
It's goofy stuff that has been compared to "Army of Darkness," and does bear a superficial resemblance in its goofy quasi-historical incongruities. But while the movie does have a sense of humor, it's pretty crude--rather than absurdist, which would much better suit this out-there concept. It's also particularly hard now to take the simpering old-school screaming-queen stereotype played by the star's brother.
Anthony's sort of proto-Lebowski wiseacre carries things to an extent, and the film has an impressive scale at times, particularly since the Euro western genre was way past its commercial peak in 1975. But the direction by a mostly undistinguished toiler in Italian B movies (he did make a handful of decent giallos, straight-faced spaghettis and other genre entries) doesn't rise to the occasion, and beyond its premise nor does the script. This is one of those enterprises that sounds so deliciously nutty it can hardly go wrong...until you actually watch it, and realize it's not nearly as much fun as it sounded.
I've seen contrary information on the film's commercial fate, some indicating it ran into distribution problems, others indicating it made $10 million (which would have been a lot then, and seems highly improbable). I suspect the truth is that it didn't do well, because apparently Anthony had hoped to kick off a whole new series of "Stranger" films. Instead, he never made another--which suggests financiers didn't want to take the risk.