Original: In March 1995, after the split of Claudio Sanchez and Travis Stever's band called Toxic Parents, they formed a band with Nate Kelley called Beautiful Loser.
Simplified: When a band called Toxic Parents, with Claudio Sanchez and Travis Stever in it, broke up about the same time as Nate Kelley's band, Moe & The Boogie Cats, the members of these bands came together to form a new band in March 1995. This band was called Beautiful Loser.